2101111220012 has 24 divisors (see below), whose sum is σ = 4209607748640. Its totient is φ = 898893671040.

The previous prime is 2101111219981. The next prime is 2101111220017. The reversal of 2101111220012 is 2100221111012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (2101111220017) 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, 65924039 + ... + 65955902.

It is an arithmetic number, because the mean of its divisors is an integer number (175400322860).

Almost surely, 2^{2101111220012} is an apocalyptic number.

It is an amenable number.

2101111220012 is an abundant number, since it is smaller than the sum of its proper divisors (2108496528628).

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

2101111220012 is a wasteful number, since it uses less digits than its factorization.

2101111220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131880521 (or 131880519 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2101111220012 its reverse (2100221111012), we get a palindrome (4201332331024).

The spelling of 2101111220012 in words is "two trillion, one hundred one billion, one hundred eleven million, two hundred twenty thousand, twelve".