2111121121110 has 64 divisors (see below), whose sum is σ = 5095390442688. Its totient is φ = 559783378944.

The previous prime is 2111121121049. The next prime is 2111121121117. The reversal of 2111121121110 is 111211211112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2111121121110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111121121117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4917654 + ... + 5329686.

It is an arithmetic number, because the mean of its divisors is an integer number (79615475667).

Almost surely, 2^{2111121121110} is an apocalyptic number.

2111121121110 is an abundant number, since it is smaller than the sum of its proper divisors (2984269321578).

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

2111121121110 is a wasteful number, since it uses less digits than its factorization.

2111121121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413009.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 2111121121110 its reverse (111211211112), we get a palindrome (2222332332222).

The spelling of 2111121121110 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred ten".