1002001221222 has 16 divisors (see below), whose sum is σ = 2004013148592. Its totient is φ = 333998622720.

The previous prime is 1002001221217. The next prime is 1002001221223. The reversal of 1002001221222 is 2221221002001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002001221223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290822 + ... + 1915782.

It is an arithmetic number, because the mean of its divisors is an integer number (125250821787).

Almost surely, 2^{1002001221222} is an apocalyptic number.

1002001221222 is an abundant number, since it is smaller than the sum of its proper divisors (1002011927370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002001221222 is a wasteful number, since it uses less digits than its factorization.

1002001221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892183.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1002001221222 its reverse (2221221002001), we get a palindrome (3223222223223).

The spelling of 1002001221222 in words is "one trillion, two billion, one million, two hundred twenty-one thousand, two hundred twenty-two".