212515133 has 4 divisors (see below), whose sum is σ = 223700160. Its totient is φ = 201330108.

The previous prime is 212515123. The next prime is 212515157. The reversal of 212515133 is 331515212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212515133 - 2⁸ = 212514877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212515099 and 212515108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212515123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5592485 + ... + 5592522.

It is an arithmetic number, because the mean of its divisors is an integer number (55925040).

Almost surely, 2^212515133 is an apocalyptic number.

It is an amenable number.

212515133 is a deficient number, since it is larger than the sum of its proper divisors (11185027).

212515133 is a wasteful number, since it uses less digits than its factorization.

212515133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11185026.

The product of its digits is 900, while the sum is 23.

The square root of 212515133 is about 14577.8987854903. The cubic root of 212515133 is about 596.7557611028.

The spelling of 212515133 in words is "two hundred twelve million, five hundred fifteen thousand, one hundred thirty-three".