120021122112121 has 8 divisors (see below), whose sum is σ = 123903121004288. Its totient is φ = 116139770082000.

The previous prime is 120021122112103. The next prime is 120021122112131. The reversal of 120021122112121 is 121211221120021.

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 120021122112121 - 2⁴³ = 111225029089913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021122112131) 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, 161338410 + ... + 162080611.

It is an arithmetic number, because the mean of its divisors is an integer number (15487890125536).

Almost surely, 2^{120021122112121} is an apocalyptic number.

It is an amenable number.

120021122112121 is a deficient number, since it is larger than the sum of its proper divisors (3881998892167).

120021122112121 is a wasteful number, since it uses less digits than its factorization.

120021122112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323431023.

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

Adding to 120021122112121 its reverse (121211221120021), we get a palindrome (241232343232142).

The spelling of 120021122112121 in words is "one hundred twenty trillion, twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-one".