2220112021081 has 2 divisors, whose sum is σ = 2220112021082. Its totient is φ = 2220112021080.

The previous prime is 2220112021009. The next prime is 2220112021111. The reversal of 2220112021081 is 1801202110222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2089588782681 + 130523238400 = 1445541^2 + 361280^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220112021081 - 2¹⁵ = 2220111988313 is a prime.

It is a super-2 number, since 2×2220112021081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2220112051081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110056010540 + 1110056010541.

It is an arithmetic number, because the mean of its divisors is an integer number (1110056010541).

Almost surely, 2^{2220112021081} is an apocalyptic number.

It is an amenable number.

2220112021081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220112021081 is an equidigital number, since it uses as much as digits as its factorization.

2220112021081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 2220112021081 in words is "two trillion, two hundred twenty billion, one hundred twelve million, twenty-one thousand, eighty-one".