20112022312021 has 4 divisors (see below), whose sum is σ = 20760797225344. Its totient is φ = 19463247398700.

The previous prime is 20112022311991. The next prime is 20112022312037. The reversal of 20112022312021 is 12021322021102.

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 20112022312021 - 2¹³ = 20112022303829 is a prime.

It is a super-2 number, since 2×20112022312021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112022312021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112025312021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324387456615 + ... + 324387456676.

It is an arithmetic number, because the mean of its divisors is an integer number (5190199306336).

Almost surely, 2^{20112022312021} is an apocalyptic number.

It is an amenable number.

20112022312021 is a deficient number, since it is larger than the sum of its proper divisors (648774913323).

20112022312021 is an equidigital number, since it uses as much as digits as its factorization.

20112022312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648774913322.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20112022312021 its reverse (12021322021102), we get a palindrome (32133344333123).

The spelling of 20112022312021 in words is "twenty trillion, one hundred twelve billion, twenty-two million, three hundred twelve thousand, twenty-one".