120100033021 has 4 divisors (see below), whose sum is σ = 124241413500. Its totient is φ = 115958652544.

The previous prime is 120100032979. The next prime is 120100033033. The reversal of 120100033021 is 120330001021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120330001021 = 127 ⋅947480323.

It can be written as a sum of positive squares in 2 ways, for example, as 30979872121 + 89120160900 = 176011^2 + 298530^2 .

It is a cyclic number.

It is not a de Polignac number, because 120100033021 - 2²⁷ = 119965815293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100032992 and 120100033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100033051) 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, 2070690196 + ... + 2070690253.

It is an arithmetic number, because the mean of its divisors is an integer number (31060353375).

Almost surely, 2^120100033021 is an apocalyptic number.

It is an amenable number.

120100033021 is a deficient number, since it is larger than the sum of its proper divisors (4141380479).

120100033021 is an equidigital number, since it uses as much as digits as its factorization.

120100033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141380478.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 120100033021 its reverse (120330001021), we get a palindrome (240430034042).

The spelling of 120100033021 in words is "one hundred twenty billion, one hundred million, thirty-three thousand, twenty-one".