212180880730 has 48 divisors (see below), whose sum is σ = 472645044864. Its totient is φ = 67151747520.

The previous prime is 212180880719. The next prime is 212180880733. The reversal of 212180880730 is 37088081212.

It is a super-2 number, since 2×212180880730² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212180880733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8956086 + ... + 8979745.

It is an arithmetic number, because the mean of its divisors is an integer number (9846771768).

Almost surely, 2^212180880730 is an apocalyptic number.

212180880730 is an abundant number, since it is smaller than the sum of its proper divisors (260464164134).

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

212180880730 is a wasteful number, since it uses less digits than its factorization.

212180880730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17935871 (or 17935858 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The spelling of 212180880730 in words is "two hundred twelve billion, one hundred eighty million, eight hundred eighty thousand, seven hundred thirty".