220112002122021 has 6 divisors (see below), whose sum is σ = 317939558620710. Its totient is φ = 146741334748008.

The previous prime is 220112002122017. The next prime is 220112002122043. The reversal of 220112002122021 is 120221200211022.

It is a happy number.

220112002122021 is a `hidden beast` number, since 2 + 201 + 1 + 200 + 21 + 220 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118674573413796 + 101437428708225 = 10893786^2 + 10071615^2 .

It is not a de Polignac number, because 220112002122021 - 2² = 220112002122017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220112002121985 and 220112002122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112002132021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12228444562326 + ... + 12228444562343.

It is an arithmetic number, because the mean of its divisors is an integer number (52989926436785).

Almost surely, 2^{220112002122021} is an apocalyptic number.

It is an amenable number.

220112002122021 is a deficient number, since it is larger than the sum of its proper divisors (97827556498689).

220112002122021 is a wasteful number, since it uses less digits than its factorization.

220112002122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24456889124675 (or 24456889124672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220112002122021 its reverse (120221200211022), we get a palindrome (340333202333043).

The spelling of 220112002122021 in words is "two hundred twenty trillion, one hundred twelve billion, two million, one hundred twenty-two thousand, twenty-one".