2112111121012 has 24 divisors (see below), whose sum is σ = 3700089679104. Its totient is φ = 1054943188512.

The previous prime is 2112111121007. The next prime is 2112111121013. The reversal of 2112111121012 is 2101211112112.

It is a super-2 number, since 2×2112111121012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112111121013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15856473 + ... + 15989119.

It is an arithmetic number, because the mean of its divisors is an integer number (154170403296).

Almost surely, 2^{2112111121012} is an apocalyptic number.

It is an amenable number.

2112111121012 is a deficient number, since it is larger than the sum of its proper divisors (1587978558092).

2112111121012 is a wasteful number, since it uses less digits than its factorization.

2112111121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136815 (or 136813 counting only the distinct ones).

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

Adding to 2112111121012 its reverse (2101211112112), we get a palindrome (4213322233124).

The spelling of 2112111121012 in words is "two trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty-one thousand, twelve".