121021413223 has 16 divisors (see below), whose sum is σ = 124202484000. Its totient is φ = 117876620160.

The previous prime is 121021413199. The next prime is 121021413251. The reversal of 121021413223 is 322314120121.

It is a cyclic number.

It is not a de Polignac number, because 121021413223 - 2²⁵ = 120987858791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121021413194 and 121021413203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021413283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4221528 + ... + 4250098.

It is an arithmetic number, because the mean of its divisors is an integer number (7762655250).

Almost surely, 2^121021413223 is an apocalyptic number.

121021413223 is a deficient number, since it is larger than the sum of its proper divisors (3181070777).

121021413223 is a wasteful number, since it uses less digits than its factorization.

121021413223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29202.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 121021413223 its reverse (322314120121), we get a palindrome (443335533344).

The spelling of 121021413223 in words is "one hundred twenty-one billion, twenty-one million, four hundred thirteen thousand, two hundred twenty-three".