212157292 has 6 divisors (see below), whose sum is σ = 371275268. Its totient is φ = 106078644.

The previous prime is 212157289. The next prime is 212157299. The reversal of 212157292 is 292751212.

It is not an unprimeable number, because it can be changed into a prime (212157299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26519658 + ... + 26519665.

Almost surely, 2^212157292 is an apocalyptic number.

It is an amenable number.

212157292 is a deficient number, since it is larger than the sum of its proper divisors (159117976).

212157292 is a wasteful number, since it uses less digits than its factorization.

212157292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53039327 (or 53039325 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 212157292 is about 14565.6202065000. The cubic root of 212157292 is about 596.4206263053.

The spelling of 212157292 in words is "two hundred twelve million, one hundred fifty-seven thousand, two hundred ninety-two".