2100021110012 has 36 divisors (see below), whose sum is σ = 4339897999920. Its totient is φ = 870976486080.

The previous prime is 2100021109999. The next prime is 2100021110029. The reversal of 2100021110012 is 2100111200012.

It is a junction number, because it is equal to n+sod(n) for n = 2100021109975 and 2100021110002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38995337 + ... + 39049152.

It is an arithmetic number, because the mean of its divisors is an integer number (120552722220).

Almost surely, 2^{2100021110012} is an apocalyptic number.

It is an amenable number.

2100021110012 is an abundant number, since it is smaller than the sum of its proper divisors (2239876889908).

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

2100021110012 is a wasteful number, since it uses less digits than its factorization.

2100021110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78044562 (or 78044529 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2100021110012 its reverse (2100111200012), we get a palindrome (4200132310024).

The spelling of 2100021110012 in words is "two trillion, one hundred billion, twenty-one million, one hundred ten thousand, twelve".