20220121111212 has 72 divisors (see below), whose sum is σ = 56270061928080. Its totient is φ = 6071095566720.

The previous prime is 20220121111159. The next prime is 20220121111241. The reversal of 20220121111212 is 21211112102202.

20220121111212 is a `hidden beast` number, since 2 + 0 + 220 + 121 + 111 + 212 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234181203 + ... + 234267530.

It is an arithmetic number, because the mean of its divisors is an integer number (781528637890).

Almost surely, 2^{20220121111212} is an apocalyptic number.

20220121111212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20220121111212 is an abundant number, since it is smaller than the sum of its proper divisors (36049940816868).

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

20220121111212 is a wasteful number, since it uses less digits than its factorization.

20220121111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468448863 (or 468448858 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20220121111212 its reverse (21211112102202), we get a palindrome (41431233213414).

The spelling of 20220121111212 in words is "twenty trillion, two hundred twenty billion, one hundred twenty-one million, one hundred eleven thousand, two hundred twelve".