2021122100212 has 12 divisors (see below), whose sum is σ = 3536973695556. Its totient is φ = 1010558187200.

The previous prime is 2021122100171. The next prime is 2021122100233. The reversal of 2021122100212 is 2120012211202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1274356507876 + 746765592336 = 1128874^2 + 864156^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128962 + ... + 2928262.

It is an arithmetic number, because the mean of its divisors is an integer number (294747807963).

Almost surely, 2^{2021122100212} is an apocalyptic number.

It is an amenable number.

2021122100212 is a deficient number, since it is larger than the sum of its proper divisors (1515851595344).

2021122100212 is a wasteful number, since it uses less digits than its factorization.

2021122100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431458 (or 1431456 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021122100212 its reverse (2120012211202), we get a palindrome (4141134311414).

The spelling of 2021122100212 in words is "two trillion, twenty-one billion, one hundred twenty-two million, one hundred thousand, two hundred twelve".