220120202000221 has 4 divisors (see below), whose sum is σ = 229690645565472. Its totient is φ = 210549758434972.

The previous prime is 220120202000213. The next prime is 220120202000233. The reversal of 220120202000221 is 122000202021022.

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 220120202000221 - 2³ = 220120202000213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220120202000195 and 220120202000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120202000521) 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, 4785221782591 + ... + 4785221782636.

It is an arithmetic number, because the mean of its divisors is an integer number (57422661391368).

Almost surely, 2^{220120202000221} is an apocalyptic number.

It is an amenable number.

220120202000221 is a deficient number, since it is larger than the sum of its proper divisors (9570443565251).

220120202000221 is an equidigital number, since it uses as much as digits as its factorization.

220120202000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570443565250.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220120202000221 its reverse (122000202021022), we get a palindrome (342120404021243).

The spelling of 220120202000221 in words is "two hundred twenty trillion, one hundred twenty billion, two hundred two million, two hundred twenty-one", and thus it is an aban number.