2001111212012 has 48 divisors (see below), whose sum is σ = 4052422700928. Its totient is φ = 854525118720.

The previous prime is 2001111211999. The next prime is 2001111212039. The reversal of 2001111212012 is 2102121111002.

It is a super-2 number, since 2×2001111212012² (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 15 ways as a sum of consecutive naturals, for example, 2036258 + ... + 2854569.

It is an arithmetic number, because the mean of its divisors is an integer number (84425472936).

Almost surely, 2^{2001111212012} is an apocalyptic number.

2001111212012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001111212012 is an abundant number, since it is smaller than the sum of its proper divisors (2051311488916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001111212012 is a wasteful number, since it uses less digits than its factorization.

2001111212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891406 (or 4891404 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2001111212012 its reverse (2102121111002), we get a palindrome (4103232323014).

The spelling of 2001111212012 in words is "two trillion, one billion, one hundred eleven million, two hundred twelve thousand, twelve".