22012012212 has 24 divisors (see below), whose sum is σ = 51376264800. Its totient is φ = 7335208416.

The previous prime is 22012012181. The next prime is 22012012219. The reversal of 22012012212 is 21221021022.

It is a junction number, because it is equal to n+sod(n) for n = 22012012191 and 22012012200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012012219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222762 + ... + 306017.

It is an arithmetic number, because the mean of its divisors is an integer number (2140677700).

Almost surely, 2^22012012212 is an apocalyptic number.

It is an amenable number.

22012012212 is an abundant number, since it is smaller than the sum of its proper divisors (29364252588).

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

22012012212 is a wasteful number, since it uses less digits than its factorization.

22012012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532255 (or 532253 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22012012212 its reverse (21221021022), we get a palindrome (43233033234).

The spelling of 22012012212 in words is "twenty-two billion, twelve million, twelve thousand, two hundred twelve".