20220120221 has 8 divisors (see below), whose sum is σ = 23313211584. Its totient is φ = 17178154560.

The previous prime is 20220120211. The next prime is 20220120223. The reversal of 20220120221 is 12202102202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20220120221 - 2¹⁰ = 20220119197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220120196 and 20220120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220120223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12780575 + ... + 12782156.

It is an arithmetic number, because the mean of its divisors is an integer number (2914151448).

Almost surely, 2^20220120221 is an apocalyptic number.

It is an amenable number.

20220120221 is a deficient number, since it is larger than the sum of its proper divisors (3093091363).

20220120221 is a wasteful number, since it uses less digits than its factorization.

20220120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25562851.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20220120221 its reverse (12202102202), we get a palindrome (32422222423).

The spelling of 20220120221 in words is "twenty billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".