20221012212120 has 96 divisors (see below), whose sum is σ = 67838234555520. Its totient is φ = 5218325729280.

The previous prime is 20221012212119. The next prime is 20221012212143. The reversal of 20221012212120 is 2121221012202.

It is a happy number.

20221012212120 is a `hidden beast` number, since 20 + 2 + 210 + 1 + 221 + 212 + 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 = 20221012212093 and 20221012212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 905948169 + ... + 905970488.

It is an arithmetic number, because the mean of its divisors is an integer number (706648276620).

Almost surely, 2^{20221012212120} is an apocalyptic number.

20221012212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221012212120 is an abundant number, since it is smaller than the sum of its proper divisors (47617222343400).

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

20221012212120 is a wasteful number, since it uses less digits than its factorization.

20221012212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811918705 (or 1811918698 counting only the distinct ones).

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

Adding to 20221012212120 its reverse (2121221012202), we get a palindrome (22342233224322).

The spelling of 20221012212120 in words is "twenty trillion, two hundred twenty-one billion, twelve million, two hundred twelve thousand, one hundred twenty".