2111211102012 has 96 divisors (see below), whose sum is σ = 5319047623680. Its totient is φ = 649750295040.

The previous prime is 2111211101999. The next prime is 2111211102043. The reversal of 2111211102012 is 2102011121112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2111211101982 and 2111211102000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30885312 + ... + 30953592.

It is an arithmetic number, because the mean of its divisors is an integer number (55406746080).

Almost surely, 2^{2111211102012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111211102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2659523811840).

2111211102012 is an abundant number, since it is smaller than the sum of its proper divisors (3207836521668).

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

2111211102012 is a wasteful number, since it uses less digits than its factorization.

2111211102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72203 (or 72201 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111211102012 its reverse (2102011121112), we get a palindrome (4213222223124).

The spelling of 2111211102012 in words is "two trillion, one hundred eleven billion, two hundred eleven million, one hundred two thousand, twelve".