212161712 has 40 divisors (see below), whose sum is σ = 471374592. Its totient is φ = 90619200.

The previous prime is 212161693. The next prime is 212161723. The reversal of 212161712 is 217161212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31787 + ... + 37877.

Almost surely, 2^212161712 is an apocalyptic number.

It is an amenable number.

212161712 is an abundant number, since it is smaller than the sum of its proper divisors (259212880).

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

212161712 is a wasteful number, since it uses less digits than its factorization.

212161712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417 (or 6411 counting only the distinct ones).

The product of its digits is 336, while the sum is 23.

The square root of 212161712 is about 14565.7719328568. The cubic root of 212161712 is about 596.4247681393.

The spelling of 212161712 in words is "two hundred twelve million, one hundred sixty-one thousand, seven hundred twelve".