22121100020212 has 12 divisors (see below), whose sum is σ = 38728461542596. Its totient is φ = 11055825293760.

The previous prime is 22121100020161. The next prime is 22121100020233. The reversal of 22121100020212 is 21202000112122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14956891047396 + 7164208972816 = 3867414^2 + 2676604^2 .

It is a super-2 number, since 2×22121100020212² (a number of 27 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 3 ways as a sum of consecutive naturals, for example, 1181168553 + ... + 1181187280.

Almost surely, 2^{22121100020212} is an apocalyptic number.

It is an amenable number.

22121100020212 is a deficient number, since it is larger than the sum of its proper divisors (16607361522384).

22121100020212 is a wasteful number, since it uses less digits than its factorization.

22121100020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362358178 (or 2362358176 counting only the distinct ones).

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

Adding to 22121100020212 its reverse (21202000112122), we get a palindrome (43323100132334).

The spelling of 22121100020212 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, twenty thousand, two hundred twelve".