213123056201 has 4 divisors (see below), whose sum is σ = 232497879504. Its totient is φ = 193748232900.

The previous prime is 213123056131. The next prime is 213123056213. The reversal of 213123056201 is 102650321312.

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 213123056201 - 2¹⁸ = 213122794057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213123056231) 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, 9687411635 + ... + 9687411656.

It is an arithmetic number, because the mean of its divisors is an integer number (58124469876).

Almost surely, 2^213123056201 is an apocalyptic number.

It is an amenable number.

213123056201 is a deficient number, since it is larger than the sum of its proper divisors (19374823303).

213123056201 is a wasteful number, since it uses less digits than its factorization.

213123056201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19374823302.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 213123056201 its reverse (102650321312), we get a palindrome (315773377513).

The spelling of 213123056201 in words is "two hundred thirteen billion, one hundred twenty-three million, fifty-six thousand, two hundred one".