1000222221999 has 64 divisors (see below), whose sum is σ = 1839002618880. Its totient is φ = 466664094720.

The previous prime is 1000222221997. The next prime is 1000222222019. The reversal of 1000222221999 is 9991222220001.

It is not a de Polignac number, because 1000222221999 - 2¹ = 1000222221997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222221997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4389894 + ... + 4612115.

It is an arithmetic number, because the mean of its divisors is an integer number (28734415920).

Almost surely, 2^{1000222221999} is an apocalyptic number.

1000222221999 is a deficient number, since it is larger than the sum of its proper divisors (838780396881).

1000222221999 is a wasteful number, since it uses less digits than its factorization.

1000222221999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9002080.

The product of its (nonzero) digits is 23328, while the sum is 39.

It can be divided in two parts, 1000222 and 221999, that added together give a palindrome (1222221).

The spelling of 1000222221999 in words is "one trillion, two hundred twenty-two million, two hundred twenty-one thousand, nine hundred ninety-nine".