121120010121221 has 4 divisors (see below), whose sum is σ = 121120114287744. Its totient is φ = 121119905954700.

The previous prime is 121120010121217. The next prime is 121120010121239. The reversal of 121120010121221 is 122121010021121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121120010121221 - 2² = 121120010121217 is a prime.

It is a super-2 number, since 2×121120010121221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121120010121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120010151221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50319215 + ... + 52671276.

It is an arithmetic number, because the mean of its divisors is an integer number (30280028571936).

Almost surely, 2^{121120010121221} is an apocalyptic number.

It is an amenable number.

121120010121221 is a deficient number, since it is larger than the sum of its proper divisors (104166523).

121120010121221 is a wasteful number, since it uses less digits than its factorization.

121120010121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104166522.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121120010121221 its reverse (122121010021121), we get a palindrome (243241020142342).

The spelling of 121120010121221 in words is "one hundred twenty-one trillion, one hundred twenty billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".