10645313110021 has 4 divisors (see below), whose sum is σ = 10645325125344. Its totient is φ = 10645301094700.

The previous prime is 10645313109997. The next prime is 10645313110027. The reversal of 10645313110021 is 12001131354601.

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 a de Polignac number, because none of the positive numbers 2^k-10645313110021 is a prime.

It is a super-2 number, since 2×10645313110021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10645313110027) 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, 4562875 + ... + 6489256.

It is an arithmetic number, because the mean of its divisors is an integer number (2661331281336).

Almost surely, 2^{10645313110021} is an apocalyptic number.

It is an amenable number.

10645313110021 is a deficient number, since it is larger than the sum of its proper divisors (12015323).

10645313110021 is an equidigital number, since it uses as much as digits as its factorization.

10645313110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12015322.

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 10645313110021 its reverse (12001131354601), we get a palindrome (22646444464622).

The spelling of 10645313110021 in words is "ten trillion, six hundred forty-five billion, three hundred thirteen million, one hundred ten thousand, twenty-one".