121220230999 has 8 divisors (see below), whose sum is σ = 139808393120. Its totient is φ = 102949815456.

The previous prime is 121220230949. The next prime is 121220231003. The reversal of 121220230999 is 999032022121.

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 121220230999 - 2¹⁷ = 121220099927 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 (121220230939) 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, 79435824 + ... + 79437349.

It is an arithmetic number, because the mean of its divisors is an integer number (17476049140).

Almost surely, 2^121220230999 is an apocalyptic number.

121220230999 is a deficient number, since it is larger than the sum of its proper divisors (18588162121).

121220230999 is a wasteful number, since it uses less digits than its factorization.

121220230999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158873289.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 121220230999 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred thirty thousand, nine hundred ninety-nine".