215213162001 has 4 divisors (see below), whose sum is σ = 286950882672. Its totient is φ = 143475441332.

The previous prime is 215213161991. The next prime is 215213162027. The reversal of 215213162001 is 100261312512.

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 215213162001 - 2⁷ = 215213161873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215213162081) 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, 35868860331 + ... + 35868860336.

It is an arithmetic number, because the mean of its divisors is an integer number (71737720668).

Almost surely, 2^215213162001 is an apocalyptic number.

It is an amenable number.

215213162001 is a deficient number, since it is larger than the sum of its proper divisors (71737720671).

215213162001 is an equidigital number, since it uses as much as digits as its factorization.

215213162001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71737720670.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 215213162001 its reverse (100261312512), we get a palindrome (315474474513).

The spelling of 215213162001 in words is "two hundred fifteen billion, two hundred thirteen million, one hundred sixty-two thousand, one".