21022111112011 has 16 divisors (see below), whose sum is σ = 22368931099200. Its totient is φ = 19712001612160.

The previous prime is 21022111112003. The next prime is 21022111112131. The reversal of 21022111112011 is 11021111122012.

It is not a de Polignac number, because 21022111112011 - 2³ = 21022111112003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022111112911) 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, 5861536 + ... + 8740813.

It is an arithmetic number, because the mean of its divisors is an integer number (1398058193700).

Almost surely, 2^{21022111112011} is an apocalyptic number.

21022111112011 is a deficient number, since it is larger than the sum of its proper divisors (1346819987189).

21022111112011 is a wasteful number, since it uses less digits than its factorization.

21022111112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14603606.

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

Adding to 21022111112011 its reverse (11021111122012), we get a palindrome (32043222234023).

The spelling of 21022111112011 in words is "twenty-one trillion, twenty-two billion, one hundred eleven million, one hundred twelve thousand, eleven".