120010021220021 has 4 divisors (see below), whose sum is σ = 122800951946112. Its totient is φ = 117219090493932.

The previous prime is 120010021220009. The next prime is 120010021220057. The reversal of 120010021220021 is 120022120010021.

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 120010021220021 - 2⁴² = 115611974708917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120010021219978 and 120010021220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120010021223021) 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, 1395465362981 + ... + 1395465363066.

It is an arithmetic number, because the mean of its divisors is an integer number (30700237986528).

Almost surely, 2^{120010021220021} is an apocalyptic number.

It is an amenable number.

120010021220021 is a deficient number, since it is larger than the sum of its proper divisors (2790930726091).

120010021220021 is an equidigital number, since it uses as much as digits as its factorization.

120010021220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790930726090.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120010021220021 its reverse (120022120010021), we get a palindrome (240032141230042).

The spelling of 120010021220021 in words is "one hundred twenty trillion, ten billion, twenty-one million, two hundred twenty thousand, twenty-one".