22155534212 has 96 divisors (see below), whose sum is σ = 48277340160. Its totient is φ = 8681904000.

The previous prime is 22155534179. The next prime is 22155534221. The reversal of 22155534212 is 21243555122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6941537 + ... + 6944727.

It is an arithmetic number, because the mean of its divisors is an integer number (502888960).

Almost surely, 2^22155534212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22155534212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24138670080).

22155534212 is an abundant number, since it is smaller than the sum of its proper divisors (26121805948).

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

22155534212 is a wasteful number, since it uses less digits than its factorization.

22155534212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673 (or 3671 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 22155534212 in words is "twenty-two billion, one hundred fifty-five million, five hundred thirty-four thousand, two hundred twelve".