2001021122 has 8 divisors (see below), whose sum is σ = 3002959872. Its totient is φ = 1000034500.

The previous prime is 2001021109. The next prime is 2001021149. The reversal of 2001021122 is 2211201002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232754 + ... + 241197.

It is an arithmetic number, because the mean of its divisors is an integer number (375369984).

Almost surely, 2^2001021122 is an apocalyptic number.

2001021122 is a deficient number, since it is larger than the sum of its proper divisors (1001938750).

2001021122 is a wasteful number, since it uses less digits than its factorization.

2001021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476064.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2001021122 is about 44732.7745841905. The cubic root of 2001021122 is about 1260.1354355971.

Adding to 2001021122 its reverse (2211201002), we get a palindrome (4212222124).

The spelling of 2001021122 in words is "two billion, one million, twenty-one thousand, one hundred twenty-two".