2001200122112 has 36 divisors (see below), whose sum is σ = 4000217527740. Its totient is φ = 999188686848.

The previous prime is 2001200122099. The next prime is 2001200122133. The reversal of 2001200122112 is 2112210021002.

It can be written as a sum of positive squares in 2 ways, for example, as 84016500736 + 1917183621376 = 289856^2 + 1384624^2 .

It is a super-2 number, since 2×2001200122112² (a number of 25 digits) contains 22 as substring.

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, 5331323 + ... + 5694330.

Almost surely, 2^{2001200122112} is an apocalyptic number.

It is an amenable number.

2001200122112 is a deficient number, since it is larger than the sum of its proper divisors (1999017405628).

2001200122112 is an equidigital number, since it uses as much as digits as its factorization.

2001200122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026378 (or 11026364 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2001200122112 its reverse (2112210021002), we get a palindrome (4113410143114).

The spelling of 2001200122112 in words is "two trillion, one billion, two hundred million, one hundred twenty-two thousand, one hundred twelve".