121120002022221 has 40 divisors (see below), whose sum is σ = 182046356236800. Its totient is φ = 80250835220640.

The previous prime is 121120002022207. The next prime is 121120002022231. The reversal of 121120002022221 is 122220200021121.

It is a happy number.

121120002022221 is a `hidden beast` number, since 121 + 120 + 0 + 0 + 202 + 2 + 221 = 666.

It is not a de Polignac number, because 121120002022221 - 2¹⁹ = 121120001497933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121120002022194 and 121120002022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120002022231) 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 39 ways as a sum of consecutive naturals, for example, 3707836 + ... + 15999626.

It is an arithmetic number, because the mean of its divisors is an integer number (4551158905920).

Almost surely, 2^{121120002022221} is an apocalyptic number.

It is an amenable number.

121120002022221 is a deficient number, since it is larger than the sum of its proper divisors (60926354214579).

121120002022221 is a wasteful number, since it uses less digits than its factorization.

121120002022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12292551 (or 12292542 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121120002022221 its reverse (122220200021121), we get a palindrome (243340202043342).

The spelling of 121120002022221 in words is "one hundred twenty-one trillion, one hundred twenty billion, two million, twenty-two thousand, two hundred twenty-one".