21022103311 has 12 divisors (see below), whose sum is σ = 23123300200. Its totient is φ = 19097472240.

The previous prime is 21022103309. The next prime is 21022103351. The reversal of 21022103311 is 11330122012.

It is not a de Polignac number, because 21022103311 - 2¹ = 21022103309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022103351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112120 + ... + 233698.

Almost surely, 2^21022103311 is an apocalyptic number.

21022103311 is a deficient number, since it is larger than the sum of its proper divisors (2101196889).

21022103311 is a wasteful number, since it uses less digits than its factorization.

21022103311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123030 (or 123019 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21022103311 its reverse (11330122012), we get a palindrome (32352225323).

The spelling of 21022103311 in words is "twenty-one billion, twenty-two million, one hundred three thousand, three hundred eleven".