121222110112021 has 8 divisors (see below), whose sum is σ = 122334517150560. Its totient is φ = 120109708120752.

The previous prime is 121222110111997. The next prime is 121222110112057. The reversal of 121222110112021 is 120211011222121.

It is a happy number.

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 121222110112021 - 2¹⁷ = 121222109980949 is a prime.

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 121222110112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222110112321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61044066 + ... + 62998588.

It is an arithmetic number, because the mean of its divisors is an integer number (15291814643820).

Almost surely, 2^{121222110112021} is an apocalyptic number.

It is an amenable number.

121222110112021 is a deficient number, since it is larger than the sum of its proper divisors (1112407038539).

121222110112021 is a wasteful number, since it uses less digits than its factorization.

121222110112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523635.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121222110112021 its reverse (120211011222121), we get a palindrome (241433121334142).

The spelling of 121222110112021 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twelve thousand, twenty-one".