20112212202021 has 16 divisors (see below), whose sum is σ = 29891676597120. Its totient is φ = 13365028467360.

The previous prime is 20112212202011. The next prime is 20112212202031. The reversal of 20112212202021 is 12020221221102.

It is a happy number.

20112212202021 is a `hidden beast` number, since 20 + 1 + 1 + 221 + 220 + 202 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20112212202011) and next prime (20112212202031).

It is not a de Polignac number, because 20112212202021 - 2⁵ = 20112212201989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112212201985 and 20112212202003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112212202001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197574800 + ... + 1197591593.

It is an arithmetic number, because the mean of its divisors is an integer number (1868229787320).

Almost surely, 2^{20112212202021} is an apocalyptic number.

It is an amenable number.

20112212202021 is a deficient number, since it is larger than the sum of its proper divisors (9779464395099).

20112212202021 is a wasteful number, since it uses less digits than its factorization.

20112212202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395166713 (or 2395166707 counting only the distinct ones).

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

Adding to 20112212202021 its reverse (12020221221102), we get a palindrome (32132433423123).

The spelling of 20112212202021 in words is "twenty trillion, one hundred twelve billion, two hundred twelve million, two hundred two thousand, twenty-one".