2102111111212 has 24 divisors (see below), whose sum is σ = 4204659382560. Its totient is φ = 900811084800.

The previous prime is 2102111111207. The next prime is 2102111111227. The reversal of 2102111111212 is 2121111112012.

It is a super-2 number, since 2×2102111111212² (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 7 ways as a sum of consecutive naturals, for example, 3628789 + ... + 4168012.

It is an arithmetic number, because the mean of its divisors is an integer number (175194140940).

Almost surely, 2^{2102111111212} is an apocalyptic number.

It is an amenable number.

2102111111212 is an abundant number, since it is smaller than the sum of its proper divisors (2102548271348).

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

2102111111212 is a wasteful number, since it uses less digits than its factorization.

2102111111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806441 (or 7806439 counting only the distinct ones).

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

Adding to 2102111111212 its reverse (2121111112012), we get a palindrome (4223222223224).

The spelling of 2102111111212 in words is "two trillion, one hundred two billion, one hundred eleven million, one hundred eleven thousand, two hundred twelve".