22122111021212 has 24 divisors (see below), whose sum is σ = 38928967393680. Its totient is φ = 10999553258880.

The previous prime is 22122111021169. The next prime is 22122111021223. The reversal of 22122111021212 is 21212011122122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20370464 + ... + 21428952.

It is an arithmetic number, because the mean of its divisors is an integer number (1622040308070).

Almost surely, 2^{22122111021212} is an apocalyptic number.

It is an amenable number.

22122111021212 is a deficient number, since it is larger than the sum of its proper divisors (16806856372468).

22122111021212 is a wasteful number, since it uses less digits than its factorization.

22122111021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087541 (or 1087539 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22122111021212 its reverse (21212011122122), we get a palindrome (43334122143334).

The spelling of 22122111021212 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred eleven million, twenty-one thousand, two hundred twelve".