2001012111212 has 48 divisors (see below), whose sum is σ = 3674950171200. Its totient is φ = 952035409920.

The previous prime is 2001012111191. The next prime is 2001012111221. The reversal of 2001012111212 is 2121112101002.

It is a super-2 number, since 2×2001012111212² (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, 22101428 + ... + 22191780.

It is an arithmetic number, because the mean of its divisors is an integer number (76561461900).

Almost surely, 2^{2001012111212} is an apocalyptic number.

It is an amenable number.

2001012111212 is a deficient number, since it is larger than the sum of its proper divisors (1673938059988).

2001012111212 is a wasteful number, since it uses less digits than its factorization.

2001012111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93146 (or 93144 counting only the distinct ones).

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

Adding to 2001012111212 its reverse (2121112101002), we get a palindrome (4122124212214).

The spelling of 2001012111212 in words is "two trillion, one billion, twelve million, one hundred eleven thousand, two hundred twelve".