2011100121012 has 48 divisors (see below), whose sum is σ = 4845573146624. Its totient is φ = 648523260000.

The previous prime is 2011100121001. The next prime is 2011100121061. The reversal of 2011100121012 is 2101210011102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 195387 + ... + 2015037.

Almost surely, 2^{2011100121012} is an apocalyptic number.

It is an amenable number.

2011100121012 is an abundant number, since it is smaller than the sum of its proper divisors (2834473025612).

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

2011100121012 is a wasteful number, since it uses less digits than its factorization.

2011100121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822660 (or 1822658 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2011100121012 its reverse (2101210011102), we get a palindrome (4112310132114).

The spelling of 2011100121012 in words is "two trillion, eleven billion, one hundred million, one hundred twenty-one thousand, twelve".