2001222211022 has 4 divisors (see below), whose sum is σ = 3001833316536. Its totient is φ = 1000611105510.

The previous prime is 2001222211019. The next prime is 2001222211031. The reversal of 2001222211022 is 2201122221002.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500305552754 + ... + 500305552757.

It is an arithmetic number, because the mean of its divisors is an integer number (750458329134).

Almost surely, 2^{2001222211022} is an apocalyptic number.

2001222211022 is a deficient number, since it is larger than the sum of its proper divisors (1000611105514).

2001222211022 is a wasteful number, since it uses less digits than its factorization.

2001222211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000611105513.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2001222211022 its reverse (2201122221002), we get a palindrome (4202344432024).

The spelling of 2001222211022 in words is "two trillion, one billion, two hundred twenty-two million, two hundred eleven thousand, twenty-two".