22012122042 has 24 divisors (see below), whose sum is σ = 47709563616. Its totient is φ = 7334815176.

The previous prime is 22012122037. The next prime is 22012122073. The reversal of 22012122042 is 24022121022.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 159828 + ... + 263759.

It is an arithmetic number, because the mean of its divisors is an integer number (1987898484).

Almost surely, 2^22012122042 is an apocalyptic number.

22012122042 is an abundant number, since it is smaller than the sum of its proper divisors (25697441574).

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

22012122042 is a wasteful number, since it uses less digits than its factorization.

22012122042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426482 (or 426479 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22012122042 its reverse (24022121022), we get a palindrome (46034243064).

The spelling of 22012122042 in words is "twenty-two billion, twelve million, one hundred twenty-two thousand, forty-two".