213121422430011 has 24 divisors (see below), whose sum is σ = 310725754498224. Its totient is φ = 140750066903040.

The previous prime is 213121422429917. The next prime is 213121422430043. The reversal of 213121422430011 is 110034224121312.

213121422430011 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 214 + 2 + 2 + 430 + 0 + 11 = 666.

It is not a de Polignac number, because 213121422430011 - 2⁹ = 213121422429499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213121422430811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42948175 + ... + 47652791.

It is an arithmetic number, because the mean of its divisors is an integer number (12946906437426).

Almost surely, 2^{213121422430011} is an apocalyptic number.

213121422430011 is a deficient number, since it is larger than the sum of its proper divisors (97604332068213).

213121422430011 is a wasteful number, since it uses less digits than its factorization.

213121422430011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751771 (or 4751768 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 213121422430011 its reverse (110034224121312), we get a palindrome (323155646551323).

The spelling of 213121422430011 in words is "two hundred thirteen trillion, one hundred twenty-one billion, four hundred twenty-two million, four hundred thirty thousand, eleven".