22146553212 has 48 divisors (see below), whose sum is σ = 59064993792. Its totient is φ = 6326781120.

The previous prime is 22146553139. The next prime is 22146553213. The reversal of 22146553212 is 21235564122.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146553213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042933 + ... + 1063955.

It is an arithmetic number, because the mean of its divisors is an integer number (1230520704).

Almost surely, 2^22146553212 is an apocalyptic number.

It is an amenable number.

22146553212 is an abundant number, since it is smaller than the sum of its proper divisors (36918440580).

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

22146553212 is a wasteful number, since it uses less digits than its factorization.

22146553212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33578 (or 33576 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The spelling of 22146553212 in words is "twenty-two billion, one hundred forty-six million, five hundred fifty-three thousand, two hundred twelve".