121013331121021 has 8 divisors (see below), whose sum is σ = 128153919092544. Its totient is φ = 113875205008320.

The previous prime is 121013331120959. The next prime is 121013331121027. The reversal of 121013331121021 is 120121133310121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121013331121021 - 2⁹ = 121013331120509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121013331120983 and 121013331121001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013331121027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615363495 + ... + 615560116.

It is an arithmetic number, because the mean of its divisors is an integer number (16019239886568).

Almost surely, 2^{121013331121021} is an apocalyptic number.

It is an amenable number.

121013331121021 is a deficient number, since it is larger than the sum of its proper divisors (7140587971523).

121013331121021 is a wasteful number, since it uses less digits than its factorization.

121013331121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230929411.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 121013331121021 its reverse (120121133310121), we get a palindrome (241134464431142).

The spelling of 121013331121021 in words is "one hundred twenty-one trillion, thirteen billion, three hundred thirty-one million, one hundred twenty-one thousand, twenty-one".