12021102313 has 18 divisors (see below), whose sum is σ = 13271499962. Its totient is φ = 10880274240.

The previous prime is 12021102277. The next prime is 12021102337. The reversal of 12021102313 is 31320112021.

It can be written as a sum of positive squares in only one way, i.e., 8023322329 + 3997779984 = 89573^2 + 63228^2 .

It is not a de Polignac number, because 12021102313 - 2¹³ = 12021094121 is a prime.

It is a super-2 number, since 2×12021102313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12027102313) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25096008 + ... + 25096486.

Almost surely, 2^12021102313 is an apocalyptic number.

It is an amenable number.

12021102313 is a deficient number, since it is larger than the sum of its proper divisors (1250397649).

12021102313 is an frugal number, since it uses more digits than its factorization.

12021102313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12021102313 its reverse (31320112021), we get a palindrome (43341214334).

The spelling of 12021102313 in words is "twelve billion, twenty-one million, one hundred two thousand, three hundred thirteen".