21222133031 has 16 divisors (see below), whose sum is σ = 23987600928. Its totient is φ = 18605260800.

The previous prime is 21222133019. The next prime is 21222133043. The reversal of 21222133031 is 13033122212.

It is an interprime number because it is at equal distance from previous prime (21222133019) and next prime (21222133043).

It is a cyclic number.

It is not a de Polignac number, because 21222133031 - 2¹⁴ = 21222116647 is a prime.

It is a super-2 number, since 2×21222133031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21222132994 and 21222133012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222133061) 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, 184730 + ... + 276711.

It is an arithmetic number, because the mean of its divisors is an integer number (1499225058).

Almost surely, 2^21222133031 is an apocalyptic number.

21222133031 is a deficient number, since it is larger than the sum of its proper divisors (2765467897).

21222133031 is a wasteful number, since it uses less digits than its factorization.

21222133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461602.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21222133031 its reverse (13033122212), we get a palindrome (34255255243).

The spelling of 21222133031 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-three thousand, thirty-one".