121120122021 has 16 divisors (see below), whose sum is σ = 162306353664. Its totient is φ = 80341319024.

The previous prime is 121120122017. The next prime is 121120122023. The reversal of 121120122021 is 120221021121.

It is a cyclic number.

It is not a de Polignac number, because 121120122021 - 2² = 121120122017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120122023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361576 + ... + 610718.

It is an arithmetic number, because the mean of its divisors is an integer number (10144147104).

Almost surely, 2^121120122021 is an apocalyptic number.

It is an amenable number.

121120122021 is a deficient number, since it is larger than the sum of its proper divisors (41186231643).

121120122021 is a wasteful number, since it uses less digits than its factorization.

121120122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249960.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121120122021 its reverse (120221021121), we get a palindrome (241341143142).

The spelling of 121120122021 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, twenty-one".