212115057 has 24 divisors (see below), whose sum is σ = 355282368. Its totient is φ = 110188320.

The previous prime is 212115047. The next prime is 212115073. The reversal of 212115057 is 750511212.

212115057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212115057 - 2¹¹ = 212113009 is a prime.

It is a super-2 number, since 2×212115057² = 89985594812226498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212115037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39198 + ... + 44279.

It is an arithmetic number, because the mean of its divisors is an integer number (14803432).

Almost surely, 2^212115057 is an apocalyptic number.

It is an amenable number.

212115057 is a deficient number, since it is larger than the sum of its proper divisors (143167311).

212115057 is a wasteful number, since it uses less digits than its factorization.

212115057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83509 (or 83498 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 212115057 is about 14564.1703162247. The cubic root of 212115057 is about 596.3810463995.

Adding to 212115057 its reverse (750511212), we get a palindrome (962626269).

The spelling of 212115057 in words is "two hundred twelve million, one hundred fifteen thousand, fifty-seven".