213044022002121 has 16 divisors (see below), whose sum is σ = 286349351247168. Its totient is φ = 140884946654400.

The previous prime is 213044022002117. The next prime is 213044022002143. The reversal of 213044022002121 is 121200220440312.

It is not a de Polignac number, because 213044022002121 - 2² = 213044022002117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213044022002091 and 213044022002100.

It is not an unprimeable number, because it can be changed into a prime (213044022002321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114863146 + ... + 116703171.

It is an arithmetic number, because the mean of its divisors is an integer number (17896834452948).

Almost surely, 2^{213044022002121} is an apocalyptic number.

It is an amenable number.

213044022002121 is a deficient number, since it is larger than the sum of its proper divisors (73305329245047).

213044022002121 is a wasteful number, since it uses less digits than its factorization.

213044022002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231568792.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 213044022002121 its reverse (121200220440312), we get a palindrome (334244242442433).

The spelling of 213044022002121 in words is "two hundred thirteen trillion, forty-four billion, twenty-two million, two thousand, one hundred twenty-one".