120100100210021 has 4 divisors (see below), whose sum is σ = 120162296017344. Its totient is φ = 120037904402700.

The previous prime is 120100100209931. The next prime is 120100100210093. The reversal of 120100100210021 is 120012001001021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120100100210021 - 2¹⁰ = 120100100208997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100100209984 and 120100100210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100100210621) 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, 31097900765 + ... + 31097904626.

It is an arithmetic number, because the mean of its divisors is an integer number (30040574004336).

Almost surely, 2^{120100100210021} is an apocalyptic number.

It is an amenable number.

120100100210021 is a deficient number, since it is larger than the sum of its proper divisors (62195807323).

120100100210021 is an equidigital number, since it uses as much as digits as its factorization.

120100100210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62195807322.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120100100210021 its reverse (120012001001021), we get a palindrome (240112101211042).

The spelling of 120100100210021 in words is "one hundred twenty trillion, one hundred billion, one hundred million, two hundred ten thousand, twenty-one".