121012202021213 has 16 divisors (see below), whose sum is σ = 124609834844160. Its totient is φ = 117457935655536.

The previous prime is 121012202021197. The next prime is 121012202021251. The reversal of 121012202021213 is 312120202210121.

It is a cyclic number.

It is not a de Polignac number, because 121012202021213 - 2⁴ = 121012202021197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012202023213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10890578 + ... + 18990236.

It is an arithmetic number, because the mean of its divisors is an integer number (7788114677760).

Almost surely, 2^{121012202021213} is an apocalyptic number.

It is an amenable number.

121012202021213 is a deficient number, since it is larger than the sum of its proper divisors (3597632822947).

121012202021213 is a wasteful number, since it uses less digits than its factorization.

121012202021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8102336.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121012202021213 its reverse (312120202210121), we get a palindrome (433132404231334).

The spelling of 121012202021213 in words is "one hundred twenty-one trillion, twelve billion, two hundred two million, twenty-one thousand, two hundred thirteen".