2222021212100 has 36 divisors (see below), whose sum is σ = 4822118854224. Its totient is φ = 888747134880.

The previous prime is 2222021212031. The next prime is 2222021212111. The reversal of 2222021212100 is 12121202222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 703139 + ... + 2222261.

Almost surely, 2^{2222021212100} is an apocalyptic number.

2222021212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222021212100 is an abundant number, since it is smaller than the sum of its proper divisors (2600097642124).

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

2222021212100 is a wasteful number, since it uses less digits than its factorization.

2222021212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533764 (or 1533757 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2222021212100 its reverse (12121202222), we get a palindrome (2234142414322).

The spelling of 2222021212100 in words is "two trillion, two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, one hundred".