120122121021 has 16 divisors (see below), whose sum is σ = 183052259328. Its totient is φ = 68637826800.

The previous prime is 120122121013. The next prime is 120122121029. The reversal of 120122121021 is 120121221021.

It is an interprime number because it is at equal distance from previous prime (120122121013) and next prime (120122121029).

It is not a de Polignac number, because 120122121021 - 2³ = 120122121013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120122121029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331756 + ... + 591866.

It is an arithmetic number, because the mean of its divisors is an integer number (11440766208).

Almost surely, 2^120122121021 is an apocalyptic number.

It is an amenable number.

120122121021 is a deficient number, since it is larger than the sum of its proper divisors (62930138307).

120122121021 is a wasteful number, since it uses less digits than its factorization.

120122121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282112.

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

Adding to 120122121021 its reverse (120121221021), we get a palindrome (240243342042).

The spelling of 120122121021 in words is "one hundred twenty billion, one hundred twenty-two million, one hundred twenty-one thousand, twenty-one".