20220112021221 has 32 divisors (see below), whose sum is σ = 34235613600000. Its totient is φ = 11554179863040.

The previous prime is 20220112021217. The next prime is 20220112021229. The reversal of 20220112021221 is 12212021102202.

It is a happy number.

20220112021221 is a `hidden beast` number, since 20 + 220 + 1 + 1 + 202 + 1 + 221 = 666.

It is not a de Polignac number, because 20220112021221 - 2² = 20220112021217 is a prime.

It is a super-3 number, since 3×20220112021221³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20220112021194 and 20220112021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220112021229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12715281 + ... + 14216841.

It is an arithmetic number, because the mean of its divisors is an integer number (1069862925000).

Almost surely, 2^{20220112021221} is an apocalyptic number.

20220112021221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20220112021221 is a deficient number, since it is larger than the sum of its proper divisors (14015501578779).

20220112021221 is a wasteful number, since it uses less digits than its factorization.

20220112021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572826 (or 1572820 counting only the distinct ones).

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

Adding to 20220112021221 its reverse (12212021102202), we get a palindrome (32432133123423).

The spelling of 20220112021221 in words is "twenty trillion, two hundred twenty billion, one hundred twelve million, twenty-one thousand, two hundred twenty-one".