1022001111999 has 72 divisors (see below), whose sum is σ = 1786574095488. Its totient is φ = 582120710640.

The previous prime is 1022001111983. The next prime is 1022001112037. The reversal of 1022001111999 is 9991111002201.

It is not a de Polignac number, because 1022001111999 - 2⁴ = 1022001111983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022001101999) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3565084 + ... + 3841070.

It is an arithmetic number, because the mean of its divisors is an integer number (24813529104).

Almost surely, 2^{1022001111999} is an apocalyptic number.

1022001111999 is a deficient number, since it is larger than the sum of its proper divisors (764572983489).

1022001111999 is an equidigital number, since it uses as much as digits as its factorization.

1022001111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276327 (or 276308 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 1022001111999 in words is "one trillion, twenty-two billion, one million, one hundred eleven thousand, nine hundred ninety-nine".