20112202021021 has 8 divisors (see below), whose sum is σ = 22187107440000. Its totient is φ = 18078383838240.

The previous prime is 20112202020997. The next prime is 20112202021027. The reversal of 20112202021021 is 12012020221102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20112202021021 is a prime.

It is a super-2 number, since 2×20112202021021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112202020986 and 20112202021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112202021027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10271808021 + ... + 10271809978.

It is an arithmetic number, because the mean of its divisors is an integer number (2773388430000).

Almost surely, 2^{20112202021021} is an apocalyptic number.

It is an amenable number.

20112202021021 is a deficient number, since it is larger than the sum of its proper divisors (2074905418979).

20112202021021 is a wasteful number, since it uses less digits than its factorization.

20112202021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20543618099.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20112202021021 its reverse (12012020221102), we get a palindrome (32124222242123).

The spelling of 20112202021021 in words is "twenty trillion, one hundred twelve billion, two hundred two million, twenty-one thousand, twenty-one".