120120212101021 has 16 divisors (see below), whose sum is σ = 131820305256000. Its totient is φ = 108551939507200.

The previous prime is 120120212100997. The next prime is 120120212101093. The reversal of 120120212101021 is 120101212021021.

It is a cyclic number.

It is not a de Polignac number, because 120120212101021 - 2⁵ = 120120212100989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120120212100986 and 120120212101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120120212101921) 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, 43877275 + ... + 46534456.

It is an arithmetic number, because the mean of its divisors is an integer number (8238769078500).

Almost surely, 2^{120120212101021} is an apocalyptic number.

120120212101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120120212101021 is a deficient number, since it is larger than the sum of its proper divisors (11700093154979).

120120212101021 is a wasteful number, since it uses less digits than its factorization.

120120212101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90412460.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120120212101021 its reverse (120101212021021), we get a palindrome (240221424122042).

The spelling of 120120212101021 in words is "one hundred twenty trillion, one hundred twenty billion, two hundred twelve million, one hundred one thousand, twenty-one".