215123410401 has 4 divisors (see below), whose sum is σ = 286831213872. Its totient is φ = 143415606932.

The previous prime is 215123410393. The next prime is 215123410417. The reversal of 215123410401 is 104014321512.

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 215123410401 - 2³ = 215123410393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215123410451) 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, 35853901731 + ... + 35853901736.

It is an arithmetic number, because the mean of its divisors is an integer number (71707803468).

Almost surely, 2^215123410401 is an apocalyptic number.

It is an amenable number.

215123410401 is a deficient number, since it is larger than the sum of its proper divisors (71707803471).

215123410401 is an equidigital number, since it uses as much as digits as its factorization.

215123410401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71707803470.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 215123410401 its reverse (104014321512), we get a palindrome (319137731913).

The spelling of 215123410401 in words is "two hundred fifteen billion, one hundred twenty-three million, four hundred ten thousand, four hundred one".