213113121001 has 16 divisors (see below), whose sum is σ = 235429095168. Its totient is φ = 191297952000.

The previous prime is 213113120951. The next prime is 213113121101. The reversal of 213113121001 is 100121311312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 213113121001 - 2⁷ = 213113120873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213113121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146401 + ... + 669073.

It is an arithmetic number, because the mean of its divisors is an integer number (14714318448).

Almost surely, 2^213113121001 is an apocalyptic number.

It is an amenable number.

213113121001 is a deficient number, since it is larger than the sum of its proper divisors (22315974167).

213113121001 is a wasteful number, since it uses less digits than its factorization.

213113121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523152.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 213113121001 its reverse (100121311312), we get a palindrome (313234432313).

It can be divided in two parts, 21311312 and 1001, that multiplied together give a palindrome (21332623312).

The spelling of 213113121001 in words is "two hundred thirteen billion, one hundred thirteen million, one hundred twenty-one thousand, one".