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2213120101 = 3171390971
BaseRepresentation
bin1000001111101001…
…1000100001100101
312201020101011001011
42003322120201211
514013024320401
61003334502221
7105562132123
oct20372304145
95636334034
102213120101
11a36280985
12519204971
1329367642a
1416dcd4913
15ce45e451
hex83e98865

2213120101 has 4 divisors (see below), whose sum is σ = 2284511104. Its totient is φ = 2141729100.

The previous prime is 2213120089. The next prime is 2213120137. The reversal of 2213120101 is 1010213122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1010213122 = 2505106561.

It is a cyclic number.

It is not a de Polignac number, because 2213120101 - 213 = 2213111909 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 (2213120201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35695455 + ... + 35695516.

It is an arithmetic number, because the mean of its divisors is an integer number (571127776).

Almost surely, 22213120101 is an apocalyptic number.

It is an amenable number.

2213120101 is a deficient number, since it is larger than the sum of its proper divisors (71391003).

2213120101 is an equidigital number, since it uses as much as digits as its factorization.

2213120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71391002.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2213120101 is about 47043.8104430328. The cubic root of 2213120101 is about 1303.1717622871.

Adding to 2213120101 its reverse (1010213122), we get a palindrome (3223333223).

The spelling of 2213120101 in words is "two billion, two hundred thirteen million, one hundred twenty thousand, one hundred one".

Divisors: 1 31 71390971 2213120101