10521120511 has 16 divisors (see below), whose sum is σ = 11903415840. Its totient is φ = 9211466880.

The previous prime is 10521120481. The next prime is 10521120551. The reversal of 10521120511 is 11502112501.

It is not a de Polignac number, because 10521120511 - 2⁵ = 10521120479 is a prime.

It is a super-2 number, since 2×10521120511² (a number of 21 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 (10521120551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85105 + ... + 168181.

It is an arithmetic number, because the mean of its divisors is an integer number (743963490).

Almost surely, 2^10521120511 is an apocalyptic number.

10521120511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10521120511 is a deficient number, since it is larger than the sum of its proper divisors (1382295329).

10521120511 is a wasteful number, since it uses less digits than its factorization.

10521120511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83514.

The product of its (nonzero) digits is 100, while the sum is 19.

The spelling of 10521120511 in words is "ten billion, five hundred twenty-one million, one hundred twenty thousand, five hundred eleven".