55530512212 has 12 divisors (see below), whose sum is σ = 111061024480. Its totient is φ = 23798790936.

The previous prime is 55530512209. The next prime is 55530512237. The reversal of 55530512212 is 21221503555.

55530512212 is an admirable number.

It is a super-2 number, since 2×55530512212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991616262 + ... + 991616317.

Almost surely, 2^55530512212 is an apocalyptic number.

It is an amenable number.

55530512212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55530512212 is a wasteful number, since it uses less digits than its factorization.

55530512212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983232590 (or 1983232588 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 55530512212 in words is "fifty-five billion, five hundred thirty million, five hundred twelve thousand, two hundred twelve".