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1220101232141 = 11110918293831
BaseRepresentation
bin10001110000010011101…
…100110101011000001101
311022122021221201111121202
4101300103230311120031
5124442231403412031
62332301243435245
7154102150233251
oct21602354653015
94278257644552
101220101232141
11430495379340
12178569525b25
138b093c47bcc
14430a6042261
1521b0e7a12cb
hex11c13b3560d

1220101232141 has 4 divisors (see below), whose sum is σ = 1331019525984. Its totient is φ = 1109182938300.

The previous prime is 1220101232131. The next prime is 1220101232167. The reversal of 1220101232141 is 1412321010221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220101232141 - 226 = 1220034123277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220101232131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55459146905 + ... + 55459146926.

It is an arithmetic number, because the mean of its divisors is an integer number (332754881496).

Almost surely, 21220101232141 is an apocalyptic number.

1220101232141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220101232141 is a deficient number, since it is larger than the sum of its proper divisors (110918293843).

1220101232141 is a wasteful number, since it uses less digits than its factorization.

1220101232141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110918293842.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1220101232141 its reverse (1412321010221), we get a palindrome (2632422242362).

The spelling of 1220101232141 in words is "one trillion, two hundred twenty billion, one hundred one million, two hundred thirty-two thousand, one hundred forty-one".

Divisors: 1 11 110918293831 1220101232141