2101211112112 has 80 divisors (see below), whose sum is σ = 4666479897600. Its totient is φ = 897851437056.

The previous prime is 2101211112097. The next prime is 2101211112113. The reversal of 2101211112112 is 2112111121012.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (2101211112113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71545143 + ... + 71574505.

It is an arithmetic number, because the mean of its divisors is an integer number (58330998720).

Almost surely, 2^{2101211112112} is an apocalyptic number.

It is an amenable number.

2101211112112 is an abundant number, since it is smaller than the sum of its proper divisors (2565268785488).

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

2101211112112 is a wasteful number, since it uses less digits than its factorization.

2101211112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31250 (or 31244 counting only the distinct ones).

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

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

The spelling of 2101211112112 in words is "two trillion, one hundred one billion, two hundred eleven million, one hundred twelve thousand, one hundred twelve".