212520051166 has 4 divisors (see below), whose sum is σ = 318780076752. Its totient is φ = 106260025582.

The previous prime is 212520051119. The next prime is 212520051187. The reversal of 212520051166 is 661150025212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53130012790 + ... + 53130012793.

It is an arithmetic number, because the mean of its divisors is an integer number (79695019188).

Almost surely, 2^212520051166 is an apocalyptic number.

212520051166 is a deficient number, since it is larger than the sum of its proper divisors (106260025586).

212520051166 is a wasteful number, since it uses less digits than its factorization.

212520051166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106260025585.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 212520051166 its reverse (661150025212), we get a palindrome (873670076378).

The spelling of 212520051166 in words is "two hundred twelve billion, five hundred twenty million, fifty-one thousand, one hundred sixty-six".