20221212102120 has 64 divisors (see below), whose sum is σ = 67404040344000. Its totient is φ = 5392323226944.

The previous prime is 20221212102103. The next prime is 20221212102121. The reversal of 20221212102120 is 2120121212202.

It is a happy number.

20221212102120 is a `hidden beast` number, since 2 + 0 + 221 + 21 + 210 + 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 = 20221212102093 and 20221212102102.

It is not an unprimeable number, because it can be changed into a prime (20221212102121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9361671190 + ... + 9361673349.

It is an arithmetic number, because the mean of its divisors is an integer number (1053188130375).

Almost surely, 2^{20221212102120} is an apocalyptic number.

20221212102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221212102120 is an abundant number, since it is smaller than the sum of its proper divisors (47182828241880).

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

20221212102120 is a wasteful number, since it uses less digits than its factorization.

20221212102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18723344559 (or 18723344549 counting only the distinct ones).

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

Adding to 20221212102120 its reverse (2120121212202), we get a palindrome (22341333314322).

The spelling of 20221212102120 in words is "twenty trillion, two hundred twenty-one billion, two hundred twelve million, one hundred two thousand, one hundred twenty".