2111121012012 has 96 divisors (see below), whose sum is σ = 5131735741440. Its totient is φ = 675084336960.

The previous prime is 2111121011957. The next prime is 2111121012019. The reversal of 2111121012012 is 2102101211112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2111121011982 and 2111121012000.

It is not an unprimeable number, because it can be changed into a prime (2111121012019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4867687 + ... + 5283617.

It is an arithmetic number, because the mean of its divisors is an integer number (53455580640).

Almost surely, 2^{2111121012012} is an apocalyptic number.

It is an amenable number.

2111121012012 is an abundant number, since it is smaller than the sum of its proper divisors (3020614729428).

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

2111121012012 is a wasteful number, since it uses less digits than its factorization.

2111121012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416171 (or 416169 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111121012012 its reverse (2102101211112), we get a palindrome (4213222223124).

The spelling of 2111121012012 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, twelve thousand, twelve".