2021110222100 has 72 divisors (see below), whose sum is σ = 4404225533400. Its totient is φ = 805052275200.

The previous prime is 2021110222069. The next prime is 2021110222139. The reversal of 2021110222100 is 12220111202.

It can be written as a sum of positive squares in 12 ways, for example, as 623976766084 + 1397133456016 = 789922^2 + 1182004^2 .

It is a super-2 number, since 2×2021110222100² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59727986 + ... + 59761814.

It is an arithmetic number, because the mean of its divisors is an integer number (61169799075).

Almost surely, 2^{2021110222100} is an apocalyptic number.

2021110222100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021110222100 is an abundant number, since it is smaller than the sum of its proper divisors (2383115311300).

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

2021110222100 is a wasteful number, since it uses less digits than its factorization.

2021110222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36333 (or 36326 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021110222100 its reverse (12220111202), we get a palindrome (2033330333302).

It can be divided in two parts, 20211102 and 22100, that added together give a palindrome (20233202).

The spelling of 2021110222100 in words is "two trillion, twenty-one billion, one hundred ten million, two hundred twenty-two thousand, one hundred".