213231240201 has 32 divisors (see below), whose sum is σ = 341326540800. Its totient is φ = 115766506944.

The previous prime is 213231240197. The next prime is 213231240251. The reversal of 213231240201 is 102042132312.

It is not a de Polignac number, because 213231240201 - 2² = 213231240197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (213231240251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1409485 + ... + 1553418.

It is an arithmetic number, because the mean of its divisors is an integer number (10666454400).

Almost surely, 2^213231240201 is an apocalyptic number.

213231240201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213231240201 is a deficient number, since it is larger than the sum of its proper divisors (128095300599).

213231240201 is a wasteful number, since it uses less digits than its factorization.

213231240201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963085.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213231240201 its reverse (102042132312), we get a palindrome (315273372513).

The spelling of 213231240201 in words is "two hundred thirteen billion, two hundred thirty-one million, two hundred forty thousand, two hundred one".