212012201188 has 12 divisors (see below), whose sum is σ = 372122308012. Its totient is φ = 105691541760.

The previous prime is 212012201173. The next prime is 212012201189. The reversal of 212012201188 is 881102210212.

It can be written as a sum of positive squares in 2 ways, for example, as 106470384804 + 105541816384 = 326298^2 + 324872^2 .

It is a super-2 number, since 2×212012201188² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212012201189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78638193 + ... + 78640888.

Almost surely, 2^212012201188 is an apocalyptic number.

It is an amenable number.

212012201188 is a deficient number, since it is larger than the sum of its proper divisors (160110106824).

212012201188 is a wasteful number, since it uses less digits than its factorization.

212012201188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157279422 (or 157279420 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The spelling of 212012201188 in words is "two hundred twelve billion, twelve million, two hundred one thousand, one hundred eighty-eight".