1001222222022 has 48 divisors (see below), whose sum is σ = 2367739146240. Its totient is φ = 303245046000.

The previous prime is 1001222221997. The next prime is 1001222222029. The reversal of 1001222222022 is 2202222221001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1001222221986 and 1001222222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001222222029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 909622 + ... + 1682217.

It is an arithmetic number, because the mean of its divisors is an integer number (49327898880).

Almost surely, 2^{1001222222022} is an apocalyptic number.

1001222222022 is an abundant number, since it is smaller than the sum of its proper divisors (1366516924218).

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

1001222222022 is a wasteful number, since it uses less digits than its factorization.

1001222222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593809 (or 2593806 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1001222222022 its reverse (2202222221001), we get a palindrome (3203444443023).

The spelling of 1001222222022 in words is "one trillion, one billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-two".