10890528121 has 4 divisors (see below), whose sum is σ = 11880576144. Its totient is φ = 9900480100.

The previous prime is 10890528113. The next prime is 10890528161. The reversal of 10890528121 is 12182509801.

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 not a de Polignac number, because 10890528121 - 2³ = 10890528113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10890528101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495023995 + ... + 495024016.

It is an arithmetic number, because the mean of its divisors is an integer number (2970144036).

Almost surely, 2^10890528121 is an apocalyptic number.

10890528121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10890528121 is a deficient number, since it is larger than the sum of its proper divisors (990048023).

10890528121 is an equidigital number, since it uses as much as digits as its factorization.

10890528121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990048022.

The product of its (nonzero) digits is 11520, while the sum is 37.

It can be divided in two parts, 108905 and 28121, that added together give a triangular number (137026 = T₅₂₃).

The spelling of 10890528121 in words is "ten billion, eight hundred ninety million, five hundred twenty-eight thousand, one hundred twenty-one".