121332031221 has 8 divisors (see below), whose sum is σ = 166994623744. Its totient is φ = 78278729760.

The previous prime is 121332031207. The next prime is 121332031243. The reversal of 121332031221 is 122130233121.

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

It is not a de Polignac number, because 121332031221 - 2⁵ = 121332031189 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 (121332031921) 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, 652322656 + ... + 652322841.

It is an arithmetic number, because the mean of its divisors is an integer number (20874327968).

Almost surely, 2^121332031221 is an apocalyptic number.

It is an amenable number.

121332031221 is a deficient number, since it is larger than the sum of its proper divisors (45662592523).

121332031221 is a wasteful number, since it uses less digits than its factorization.

121332031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304645531.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121332031221 its reverse (122130233121), we get a palindrome (243462264342).

The spelling of 121332031221 in words is "one hundred twenty-one billion, three hundred thirty-two million, thirty-one thousand, two hundred twenty-one".