120021112222121 has 8 divisors (see below), whose sum is σ = 130934613063744. Its totient is φ = 109108026487120.

The previous prime is 120021112222097. The next prime is 120021112222273. The reversal of 120021112222121 is 121222211120021.

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 120021112222121 - 2²⁶ = 120021045113257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021112222093 and 120021112222102.

It is not an unprimeable number, because it can be changed into a prime (120021112222721) 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, 103171946 + ... + 104328771.

It is an arithmetic number, because the mean of its divisors is an integer number (16366826632968).

Almost surely, 2^{120021112222121} is an apocalyptic number.

120021112222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120021112222121 is a deficient number, since it is larger than the sum of its proper divisors (10913500841623).

120021112222121 is a wasteful number, since it uses less digits than its factorization.

120021112222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207553311.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120021112222121 its reverse (121222211120021), we get a palindrome (241243323342142).

The spelling of 120021112222121 in words is "one hundred twenty trillion, twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".