1021120212210 has 64 divisors (see below), whose sum is σ = 2846701442304. Its totient is φ = 229572691200.

The previous prime is 1021120212187. The next prime is 1021120212251. The reversal of 1021120212210 is 122120211201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021120212210.

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, 39843561 + ... + 39869180.

It is an arithmetic number, because the mean of its divisors is an integer number (44479710036).

Almost surely, 2^{1021120212210} is an apocalyptic number.

1021120212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021120212210 is an abundant number, since it is smaller than the sum of its proper divisors (1825581230094).

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

1021120212210 is a wasteful number, since it uses less digits than its factorization.

1021120212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79712819.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1021120212210 its reverse (122120211201), we get a palindrome (1143240423411).

The spelling of 1021120212210 in words is "one trillion, twenty-one billion, one hundred twenty million, two hundred twelve thousand, two hundred ten".