2021121012210 has 32 divisors (see below), whose sum is σ = 4851099009792. Its totient is φ = 538920205440.

The previous prime is 2021121012193. The next prime is 2021121012271. The reversal of 2021121012210 is 122101211202.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2021121012210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2474506 + ... + 3188325.

It is an arithmetic number, because the mean of its divisors is an integer number (151596844056).

Almost surely, 2^{2021121012210} is an apocalyptic number.

2021121012210 is an abundant number, since it is smaller than the sum of its proper divisors (2829977997582).

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

2021121012210 is a wasteful number, since it uses less digits than its factorization.

2021121012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674738.

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

Adding to 2021121012210 its reverse (122101211202), we get a palindrome (2143222223412).

The spelling of 2021121012210 in words is "two trillion, twenty-one billion, one hundred twenty-one million, twelve thousand, two hundred ten".