20221220120 has 16 divisors (see below), whose sum is σ = 45497745360. Its totient is φ = 8088488032.

The previous prime is 20221220093. The next prime is 20221220143. The reversal of 20221220120 is 2102212202.

It is a junction number, because it is equal to n+sod(n) for n = 20221220095 and 20221220104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252765212 + ... + 252765291.

It is an arithmetic number, because the mean of its divisors is an integer number (2843609085).

Almost surely, 2^20221220120 is an apocalyptic number.

20221220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221220120 is an abundant number, since it is smaller than the sum of its proper divisors (25276525240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20221220120 is a wasteful number, since it uses less digits than its factorization.

20221220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505530514 (or 505530510 counting only the distinct ones).

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

Adding to 20221220120 its reverse (2102212202), we get a palindrome (22323432322).

The spelling of 20221220120 in words is "twenty billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty".