20112022022021 has 4 divisors (see below), whose sum is σ = 20112043054752. Its totient is φ = 20112000989292.

The previous prime is 20112022022003. The next prime is 20112022022063. The reversal of 20112022022021 is 12022022021102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20112022022021 - 2¹⁰ = 20112022020997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112022022621) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9010115 + ... + 11018448.

It is an arithmetic number, because the mean of its divisors is an integer number (5028010763688).

Almost surely, 2^{20112022022021} is an apocalyptic number.

It is an amenable number.

20112022022021 is a deficient number, since it is larger than the sum of its proper divisors (21032731).

20112022022021 is a wasteful number, since it uses less digits than its factorization.

20112022022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032730.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20112022022021 its reverse (12022022021102), we get a palindrome (32134044043123).

The spelling of 20112022022021 in words is "twenty trillion, one hundred twelve billion, twenty-two million, twenty-two thousand, twenty-one".