220220120012021 has 4 divisors (see below), whose sum is σ = 220233084067392. Its totient is φ = 220207155956652.

The previous prime is 220220120012017. The next prime is 220220120012077. The reversal of 220220120012021 is 120210021022022.

It is a happy number.

220220120012021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220220120012021 - 2² = 220220120012017 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 (220220120912021) 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, 6482002205 + ... + 6482036178.

It is an arithmetic number, because the mean of its divisors is an integer number (55058271016848).

Almost surely, 2^{220220120012021} is an apocalyptic number.

It is an amenable number.

220220120012021 is a deficient number, since it is larger than the sum of its proper divisors (12964055371).

220220120012021 is a wasteful number, since it uses less digits than its factorization.

220220120012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12964055370.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220220120012021 its reverse (120210021022022), we get a palindrome (340430141034043).

The spelling of 220220120012021 in words is "two hundred twenty trillion, two hundred twenty billion, one hundred twenty million, twelve thousand, twenty-one".