21022213103031 has 16 divisors (see below), whose sum is σ = 32364094402304. Its totient is φ = 11888851002624.

The previous prime is 21022213103009. The next prime is 21022213103041. The reversal of 21022213103031 is 13030131222012.

It is not a de Polignac number, because 21022213103031 - 2⁶ = 21022213102967 is a prime.

It is a super-2 number, since 2×21022213103031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 21022213102989 and 21022213103007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022213103041) 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, 5160089545 + ... + 5160093618.

It is an arithmetic number, because the mean of its divisors is an integer number (2022755900144).

Almost surely, 2^{21022213103031} is an apocalyptic number.

21022213103031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21022213103031 is a deficient number, since it is larger than the sum of its proper divisors (11341881299273).

21022213103031 is a wasteful number, since it uses less digits than its factorization.

21022213103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320183270.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21022213103031 its reverse (13030131222012), we get a palindrome (34052344325043).

The spelling of 21022213103031 in words is "twenty-one trillion, twenty-two billion, two hundred thirteen million, one hundred three thousand, thirty-one".