121203032221 has 8 divisors (see below), whose sum is σ = 128042730080. Its totient is φ = 114409393488.

The previous prime is 121203032191. The next prime is 121203032243. The reversal of 121203032221 is 122230302121.

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 121203032221 - 2⁵ = 121203032189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121203032021) 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, 11509371 + ... + 11519896.

It is an arithmetic number, because the mean of its divisors is an integer number (16005341260).

Almost surely, 2^121203032221 is an apocalyptic number.

It is an amenable number.

121203032221 is a deficient number, since it is larger than the sum of its proper divisors (6839697859).

121203032221 is a wasteful number, since it uses less digits than its factorization.

121203032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23029563.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121203032221 its reverse (122230302121), we get a palindrome (243433334342).

The spelling of 121203032221 in words is "one hundred twenty-one billion, two hundred three million, thirty-two thousand, two hundred twenty-one".