2100020312112 has 80 divisors (see below), whose sum is σ = 5711637408000. Its totient is φ = 663041693952.

The previous prime is 2100020312101. The next prime is 2100020312123. The reversal of 2100020312112 is 2112130200012.

It is an interprime number because it is at equal distance from previous prime (2100020312101) and next prime (2100020312123).

It is a super-2 number, since 2×2100020312112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100020312091 and 2100020312100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4786714 + ... + 5206982.

It is an arithmetic number, because the mean of its divisors is an integer number (71395467600).

Almost surely, 2^{2100020312112} is an apocalyptic number.

It is an amenable number.

2100020312112 is an abundant number, since it is smaller than the sum of its proper divisors (3611617095888).

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

2100020312112 is a wasteful number, since it uses less digits than its factorization.

2100020312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425778 (or 425772 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2100020312112 its reverse (2112130200012), we get a palindrome (4212150512124).

The spelling of 2100020312112 in words is "two trillion, one hundred billion, twenty million, three hundred twelve thousand, one hundred twelve".