220112001202021 has 2 divisors, whose sum is σ = 220112001202022. Its totient is φ = 220112001202020.

The previous prime is 220112001202003. The next prime is 220112001202039. The reversal of 220112001202021 is 120202100211022.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (220112001202003) and next prime (220112001202039).

It can be written as a sum of positive squares in only one way, i.e., 144086052852225 + 76025948349796 = 12003585^2 + 8719286^2 .

It is a cyclic number.

It is not a de Polignac number, because 220112001202021 - 2⁷ = 220112001201893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220112001201986 and 220112001202004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220112001202001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110056000601010 + 110056000601011.

It is an arithmetic number, because the mean of its divisors is an integer number (110056000601011).

Almost surely, 2^{220112001202021} is an apocalyptic number.

It is an amenable number.

220112001202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220112001202021 is an equidigital number, since it uses as much as digits as its factorization.

220112001202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220112001202021 its reverse (120202100211022), we get a palindrome (340314101413043).

Subtracting from 220112001202021 its reverse (120202100211022), we obtain a palindrome (99909900990999).

The spelling of 220112001202021 in words is "two hundred twenty trillion, one hundred twelve billion, one million, two hundred two thousand, twenty-one".