21223031020310 has 64 divisors (see below), whose sum is σ = 46703538741888. Its totient is φ = 6777837748224.

The previous prime is 21223031020181. The next prime is 21223031020333. The reversal of 21223031020310 is 1302013032212.

It is a super-2 number, since 2×21223031020310² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91814879 + ... + 92045738.

It is an arithmetic number, because the mean of its divisors is an integer number (729742792842).

Almost surely, 2^{21223031020310} is an apocalyptic number.

21223031020310 is an abundant number, since it is smaller than the sum of its proper divisors (25480507721578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21223031020310 is a wasteful number, since it uses less digits than its factorization.

21223031020310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183860745.

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

Adding to 21223031020310 its reverse (1302013032212), we get a palindrome (22525044052522).

The spelling of 21223031020310 in words is "twenty-one trillion, two hundred twenty-three billion, thirty-one million, twenty thousand, three hundred ten".