21022000311 has 64 divisors (see below), whose sum is σ = 32313254400. Its totient is φ = 12048943104.

The previous prime is 21022000291. The next prime is 21022000319. The reversal of 21022000311 is 11300022012.

It is not a de Polignac number, because 21022000311 - 2⁹ = 21021999799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022000319) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30778576 + ... + 30779258.

It is an arithmetic number, because the mean of its divisors is an integer number (504894600).

Almost surely, 2^21022000311 is an apocalyptic number.

21022000311 is a deficient number, since it is larger than the sum of its proper divisors (11291254089).

21022000311 is a wasteful number, since it uses less digits than its factorization.

21022000311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21022000311 its reverse (11300022012), we get a palindrome (32322022323).

The spelling of 21022000311 in words is "twenty-one billion, twenty-two million, three hundred eleven", and thus it is an aban number.