21222341031 has 16 divisors (see below), whose sum is σ = 28548972000. Its totient is φ = 14022386688.

The previous prime is 21222341011. The next prime is 21222341033. The reversal of 21222341031 is 13014322212.

It is not a de Polignac number, because 21222341031 - 2⁹ = 21222340519 is a prime.

It is a super-2 number, since 2×21222341031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21222340989 and 21222341007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222341033) 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, 152335 + ... + 256223.

It is an arithmetic number, because the mean of its divisors is an integer number (1784310750).

Almost surely, 2^21222341031 is an apocalyptic number.

21222341031 is a deficient number, since it is larger than the sum of its proper divisors (7326630969).

21222341031 is a wasteful number, since it uses less digits than its factorization.

21222341031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104498.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21222341031 its reverse (13014322212), we get a palindrome (34236663243).

The spelling of 21222341031 in words is "twenty-one billion, two hundred twenty-two million, three hundred forty-one thousand, thirty-one".