212115357 has 24 divisors (see below), whose sum is σ = 310003200. Its totient is φ = 139753440.

The previous prime is 212115347. The next prime is 212115403. The reversal of 212115357 is 753511212.

212115357 is a `hidden beast` number, since 2 + 121 + 1 + 535 + 7 = 666.

It is not a de Polignac number, because 212115357 - 2¹⁰ = 212114333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212115357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212115347) 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, 491932 + ... + 492362.

It is an arithmetic number, because the mean of its divisors is an integer number (12916800).

Almost surely, 2^212115357 is an apocalyptic number.

It is an amenable number.

212115357 is a deficient number, since it is larger than the sum of its proper divisors (97887843).

212115357 is a wasteful number, since it uses less digits than its factorization.

212115357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 950 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 212115357 is about 14564.1806154689. The cubic root of 212115357 is about 596.3813275586.

Adding to 212115357 its reverse (753511212), we get a palindrome (965626569).

The spelling of 212115357 in words is "two hundred twelve million, one hundred fifteen thousand, three hundred fifty-seven".