121303331221021 has 32 divisors (see below), whose sum is σ = 123224705630208. Its totient is φ = 119400263801280.

The previous prime is 121303331220943. The next prime is 121303331221067. The reversal of 121303331221021 is 120122133303121.

It is a cyclic number.

It is not a de Polignac number, because 121303331221021 - 2¹³ = 121303331212829 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 (121303331221621) 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, 37871784606 + ... + 37871787808.

It is an arithmetic number, because the mean of its divisors is an integer number (3850772050944).

Almost surely, 2^{121303331221021} is an apocalyptic number.

It is an amenable number.

121303331221021 is a deficient number, since it is larger than the sum of its proper divisors (1921374409187).

121303331221021 is a wasteful number, since it uses less digits than its factorization.

121303331221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121303331221021 its reverse (120122133303121), we get a palindrome (241425464524142).

The spelling of 121303331221021 in words is "one hundred twenty-one trillion, three hundred three billion, three hundred thirty-one million, two hundred twenty-one thousand, twenty-one".