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1220122141 = 71409123707
BaseRepresentation
bin100100010111001…
…1001011000011101
310011000212121220221
41020232121120131
54444322402031
6321023241341
742143603260
oct11056313035
93130777827
101220122141
115767aa907
122a0749251
13165a1b384
14b808acd7
15721b2a11
hex48b9961d

1220122141 has 8 divisors (see below), whose sum is σ = 1395426240. Its totient is φ = 1045068288.

The previous prime is 1220122109. The next prime is 1220122199. The reversal of 1220122141 is 1412210221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220122141 - 25 = 1220122109 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 (1220182141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51991 + ... + 71716.

It is an arithmetic number, because the mean of its divisors is an integer number (174428280).

Almost surely, 21220122141 is an apocalyptic number.

It is an amenable number.

1220122141 is a deficient number, since it is larger than the sum of its proper divisors (175304099).

1220122141 is a wasteful number, since it uses less digits than its factorization.

1220122141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125123.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1220122141 is about 34930.2467927153. The cubic root of 1220122141 is about 1068.5653877813.

Adding to 1220122141 its reverse (1412210221), we get a palindrome (2632332362).

The spelling of 1220122141 in words is "one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred forty-one".

Divisors: 1 7 1409 9863 123707 865949 174303163 1220122141