21223020310131 has 16 divisors (see below), whose sum is σ = 28328173905920. Its totient is φ = 14133281682240.

The previous prime is 21223020310099. The next prime is 21223020310147. The reversal of 21223020310131 is 13101302032212.

It is not a de Polignac number, because 21223020310131 - 2⁵ = 21223020310099 is a prime.

It is a super-2 number, since 2×21223020310131² (a number of 27 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 = 21223020310098 and 21223020310107.

It is not an unprimeable number, because it can be changed into a prime (21223020310171) 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, 9318426 + ... + 11370096.

It is an arithmetic number, because the mean of its divisors is an integer number (1770510869120).

Almost surely, 2^{21223020310131} is an apocalyptic number.

21223020310131 is a deficient number, since it is larger than the sum of its proper divisors (7105153595789).

21223020310131 is a wasteful number, since it uses less digits than its factorization.

21223020310131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055426.

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

Adding to 21223020310131 its reverse (13101302032212), we get a palindrome (34324322342343).

The spelling of 21223020310131 in words is "twenty-one trillion, two hundred twenty-three billion, twenty million, three hundred ten thousand, one hundred thirty-one".