120100212021 has 4 divisors (see below), whose sum is σ = 160133616032. Its totient is φ = 80066808012.

The previous prime is 120100212019. The next prime is 120100212079. The reversal of 120100212021 is 120212001021.

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 not a de Polignac number, because 120100212021 - 2¹ = 120100212019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120100211988 and 120100212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100217021) 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 3 ways as a sum of consecutive naturals, for example, 20016702001 + ... + 20016702006.

It is an arithmetic number, because the mean of its divisors is an integer number (40033404008).

Almost surely, 2^120100212021 is an apocalyptic number.

It is an amenable number.

120100212021 is a deficient number, since it is larger than the sum of its proper divisors (40033404011).

120100212021 is an equidigital number, since it uses as much as digits as its factorization.

120100212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40033404010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120100212021 its reverse (120212001021), we get a palindrome (240312213042).

The spelling of 120100212021 in words is "one hundred twenty billion, one hundred million, two hundred twelve thousand, twenty-one".