2001022221002 has 16 divisors (see below), whose sum is σ = 3438510747840. Its totient is φ = 855534216768.

The previous prime is 2001022220999. The next prime is 2001022221053. The reversal of 2001022221002 is 2001222201002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170555183 + ... + 170566914.

It is an arithmetic number, because the mean of its divisors is an integer number (214906921740).

Almost surely, 2^{2001022221002} is an apocalyptic number.

2001022221002 is a deficient number, since it is larger than the sum of its proper divisors (1437488526838).

2001022221002 is a wasteful number, since it uses less digits than its factorization.

2001022221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341122525.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2001022221002 its reverse (2001222201002), we get a palindrome (4002244422004).

The spelling of 2001022221002 in words is "two trillion, one billion, twenty-two million, two hundred twenty-one thousand, two".