22031021311 has 4 divisors (see below), whose sum is σ = 23725715272. Its totient is φ = 20336327352.

The previous prime is 22031021297. The next prime is 22031021323. The reversal of 22031021311 is 11312013022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11312013022 = 2 ⋅5656006511.

It is a cyclic number.

It is not a de Polignac number, because 22031021311 - 2⁵ = 22031021279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031021351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847346961 + ... + 847346986.

It is an arithmetic number, because the mean of its divisors is an integer number (5931428818).

Almost surely, 2^22031021311 is an apocalyptic number.

22031021311 is a deficient number, since it is larger than the sum of its proper divisors (1694693961).

22031021311 is a wasteful number, since it uses less digits than its factorization.

22031021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694693960.

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

Adding to 22031021311 its reverse (11312013022), we get a palindrome (33343034333).

The spelling of 22031021311 in words is "twenty-two billion, thirty-one million, twenty-one thousand, three hundred eleven".