20312103021210 has 1152 divisors, whose sum is σ = 74145259948032. Its totient is φ = 3750993100800.

The previous prime is 20312103021181. The next prime is 20312103021251. The reversal of 20312103021210 is 1212030121302.

20312103021210 is a `hidden beast` number, since 2 + 0 + 31 + 210 + 302 + 121 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 3556660255 + ... + 3556665965.

It is an arithmetic number, because the mean of its divisors is an integer number (64362204816).

Almost surely, 2^{20312103021210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312103021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37072629974016).

20312103021210 is an abundant number, since it is smaller than the sum of its proper divisors (53833156926822).

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

20312103021210 is a wasteful number, since it uses less digits than its factorization.

20312103021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900 (or 5886 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20312103021210 its reverse (1212030121302), we get a palindrome (21524133142512).

The spelling of 20312103021210 in words is "twenty trillion, three hundred twelve billion, one hundred three million, twenty-one thousand, two hundred ten".