20221211220120 has 48 divisors (see below), whose sum is σ = 65718936466560. Its totient is φ = 5392322991936.

The previous prime is 20221211220071. The next prime is 20221211220151. The reversal of 20221211220120 is 2102211212202.

It is a happy number.

20221211220120 is a `hidden beast` number, since 2 + 0 + 221 + 211 + 220 + 12 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20221211220093 and 20221211220102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28085015224 + ... + 28085015943.

It is an arithmetic number, because the mean of its divisors is an integer number (1369144509720).

Almost surely, 2^{20221211220120} is an apocalyptic number.

20221211220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221211220120 is an abundant number, since it is smaller than the sum of its proper divisors (45497725246440).

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

20221211220120 is a wasteful number, since it uses less digits than its factorization.

20221211220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56170031184 (or 56170031177 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20221211220120 its reverse (2102211212202), we get a palindrome (22323422432322).

The spelling of 20221211220120 in words is "twenty trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty".