120421224013 has 4 divisors (see below), whose sum is σ = 120593009628. Its totient is φ = 120249438400.

The previous prime is 120421223981. The next prime is 120421224061. The reversal of 120421224013 is 310422124021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84356555364 + 36064668649 = 290442^2 + 189907^2 .

It is a cyclic number.

It is not a de Polignac number, because 120421224013 - 2⁵ = 120421223981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120421324013) 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, 85891756 + ... + 85893157.

It is an arithmetic number, because the mean of its divisors is an integer number (30148252407).

Almost surely, 2^120421224013 is an apocalyptic number.

It is an amenable number.

120421224013 is a deficient number, since it is larger than the sum of its proper divisors (171785615).

120421224013 is an equidigital number, since it uses as much as digits as its factorization.

120421224013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171785614.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 120421224013 its reverse (310422124021), we get a palindrome (430843348034).

The spelling of 120421224013 in words is "one hundred twenty billion, four hundred twenty-one million, two hundred twenty-four thousand, thirteen".