10990121011 has 4 divisors (see below), whose sum is σ = 10992715432. Its totient is φ = 10987526592.

The previous prime is 10990120997. The next prime is 10990121017. The reversal of 10990121011 is 11012109901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10990121011 - 2¹¹ = 10990118963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10990121017) 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, 1290846 + ... + 1299331.

It is an arithmetic number, because the mean of its divisors is an integer number (2748178858).

Almost surely, 2^10990121011 is an apocalyptic number.

10990121011 is a deficient number, since it is larger than the sum of its proper divisors (2594421).

10990121011 is an equidigital number, since it uses as much as digits as its factorization.

10990121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594420.

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 10990121011 in words is "ten billion, nine hundred ninety million, one hundred twenty-one thousand, eleven".