1022112211985 has 4 divisors (see below), whose sum is σ = 1226534654388. Its totient is φ = 817689769584.

The previous prime is 1022112211979. The next prime is 1022112211997. The reversal of 1022112211985 is 5891122112201.

1022112211985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594636850129 + 427475361856 = 771127^2 + 653816^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022112211985 - 2¹⁶ = 1022112146449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102211221194 + ... + 102211221203.

It is an arithmetic number, because the mean of its divisors is an integer number (306633663597).

Almost surely, 2^{1022112211985} is an apocalyptic number.

It is an amenable number.

1022112211985 is a deficient number, since it is larger than the sum of its proper divisors (204422442403).

1022112211985 is an equidigital number, since it uses as much as digits as its factorization.

1022112211985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204422442402.

The product of its (nonzero) digits is 5760, while the sum is 35.

The spelling of 1022112211985 in words is "one trillion, twenty-two billion, one hundred twelve million, two hundred eleven thousand, nine hundred eighty-five".