220111122021021 has 24 divisors (see below), whose sum is σ = 396390592039104. Its totient is φ = 114343440010560.

The previous prime is 220111122020987. The next prime is 220111122021031. The reversal of 220111122021021 is 120120221111022.

220111122021021 is a `hidden beast` number, since 2 + 201 + 1 + 11 + 220 + 210 + 21 = 666.

220111122021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220111122021021 - 2⁷ = 220111122020893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220111122020985 and 220111122021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111122021031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158810332656 + ... + 158810334041.

It is an arithmetic number, because the mean of its divisors is an integer number (16516274668296).

Almost surely, 2^{220111122021021} is an apocalyptic number.

220111122021021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220111122021021 is a deficient number, since it is larger than the sum of its proper divisors (176279470018083).

220111122021021 is a wasteful number, since it uses less digits than its factorization.

220111122021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317620666721 (or 317620666718 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220111122021021 its reverse (120120221111022), we get a palindrome (340231343132043).

Subtracting from 220111122021021 its reverse (120120221111022), we obtain a palindrome (99990900909999).

The spelling of 220111122021021 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty-two million, twenty-one thousand, twenty-one".