22021120100212 has 12 divisors (see below), whose sum is σ = 38594221636516. Its totient is φ = 10994199632640.

The previous prime is 22021120100207. The next prime is 22021120100219. The reversal of 22021120100212 is 21200102112022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15394840987876 + 6626279112336 = 3923626^2 + 2574156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021120100219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4090101339 + ... + 4090106722.

Almost surely, 2^{22021120100212} is an apocalyptic number.

It is an amenable number.

22021120100212 is a deficient number, since it is larger than the sum of its proper divisors (16573101536304).

22021120100212 is a wasteful number, since it uses less digits than its factorization.

22021120100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180208738 (or 8180208736 counting only the distinct ones).

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

Adding to 22021120100212 its reverse (21200102112022), we get a palindrome (43221222212234).

The spelling of 22021120100212 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, one hundred thousand, two hundred twelve".