212201988 has 48 divisors (see below), whose sum is σ = 502951680. Its totient is φ = 69625600.

The previous prime is 212201929. The next prime is 212201989. The reversal of 212201988 is 889102212.

It is a super-2 number, since 2×212201988² = 90059367422304288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212201989) 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, 460078 + ... + 460538.

It is an arithmetic number, because the mean of its divisors is an integer number (10478160).

Almost surely, 2^212201988 is an apocalyptic number.

It is an amenable number.

212201988 is an abundant number, since it is smaller than the sum of its proper divisors (290749692).

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

212201988 is a wasteful number, since it uses less digits than its factorization.

212201988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 212201988 is about 14567.1544235654. The cubic root of 212201988 is about 596.4625067804.

The spelling of 212201988 in words is "two hundred twelve million, two hundred one thousand, nine hundred eighty-eight".