221112020122021 has 8 divisors (see below), whose sum is σ = 252758617945344. Its totient is φ = 189480213893040.

The previous prime is 221112020122001. The next prime is 221112020122027. The reversal of 221112020122021 is 120221020211122.

221112020122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221112020122021 - 2¹⁵ = 221112020089253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221112020122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112020122027) 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, 3697866550 + ... + 3697926343.

It is an arithmetic number, because the mean of its divisors is an integer number (31594827243168).

Almost surely, 2^{221112020122021} is an apocalyptic number.

It is an amenable number.

221112020122021 is a deficient number, since it is larger than the sum of its proper divisors (31646597823323).

221112020122021 is an equidigital number, since it uses as much as digits as its factorization.

221112020122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395797171.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221112020122021 its reverse (120221020211122), we get a palindrome (341333040333143).

The spelling of 221112020122021 in words is "two hundred twenty-one trillion, one hundred twelve billion, twenty million, one hundred twenty-two thousand, twenty-one".