120355121 has 4 divisors (see below), whose sum is σ = 127434852. Its totient is φ = 113275392.

The previous prime is 120355111. The next prime is 120355127. The reversal of 120355121 is 121553021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121553021 = 1409 ⋅86269.

It can be written as a sum of positive squares in 2 ways, for example, as 89397025 + 30958096 = 9455^2 + 5564^2 .

It is a cyclic number.

It is not a de Polignac number, because 120355121 - 2²² = 116160817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120355093 and 120355102.

It is not an unprimeable number, because it can be changed into a prime (120355127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3539840 + ... + 3539873.

It is an arithmetic number, because the mean of its divisors is an integer number (31858713).

Almost surely, 2^120355121 is an apocalyptic number.

It is an amenable number.

120355121 is a deficient number, since it is larger than the sum of its proper divisors (7079731).

120355121 is an equidigital number, since it uses as much as digits as its factorization.

120355121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079730.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 120355121 is about 10970.6481576979. The cubic root of 120355121 is about 493.7284933003.

The spelling of 120355121 in words is "one hundred twenty million, three hundred fifty-five thousand, one hundred twenty-one".