2001121010122 has 16 divisors (see below), whose sum is σ = 3236566046112. Its totient is φ = 922455468720.

The previous prime is 2001121010039. The next prime is 2001121010131. The reversal of 2001121010122 is 2210101211002.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 47430328 + ... + 47472499.

It is an arithmetic number, because the mean of its divisors is an integer number (202285377882).

Almost surely, 2^{2001121010122} is an apocalyptic number.

2001121010122 is a deficient number, since it is larger than the sum of its proper divisors (1235445035990).

2001121010122 is a wasteful number, since it uses less digits than its factorization.

2001121010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94903653.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001121010122 its reverse (2210101211002), we get a palindrome (4211222221124).

The spelling of 2001121010122 in words is "two trillion, one billion, one hundred twenty-one million, ten thousand, one hundred twenty-two".