120103100021 has 4 divisors (see below), whose sum is σ = 120107329344. Its totient is φ = 120098870700.

The previous prime is 120103100011. The next prime is 120103100057. The reversal of 120103100021 is 120001301021.

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 120103100021 - 2¹⁴ = 120103083637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120103099975 and 120103100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120103100011) 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, 2071775 + ... + 2128956.

It is an arithmetic number, because the mean of its divisors is an integer number (30026832336).

Almost surely, 2^120103100021 is an apocalyptic number.

It is an amenable number.

120103100021 is a deficient number, since it is larger than the sum of its proper divisors (4229323).

120103100021 is an equidigital number, since it uses as much as digits as its factorization.

120103100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229322.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 120103100021 its reverse (120001301021), we get a palindrome (240104401042).

The spelling of 120103100021 in words is "one hundred twenty billion, one hundred three million, one hundred thousand, twenty-one".