2102111155722 has 8 divisors (see below), whose sum is σ = 4204222311456. Its totient is φ = 700703718572.

The previous prime is 2102111155631. The next prime is 2102111155751. The reversal of 2102111155722 is 2275511112012.

It is a sphenic number, since it is the product of 3 distinct primes.

2102111155722 is an admirable number.

It is a super-2 number, since 2×2102111155722² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2102111155722.

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 3 ways as a sum of consecutive naturals, for example, 175175929638 + ... + 175175929649.

It is an arithmetic number, because the mean of its divisors is an integer number (525527788932).

Almost surely, 2^{2102111155722} is an apocalyptic number.

2102111155722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2102111155722 is a wasteful number, since it uses less digits than its factorization.

2102111155722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350351859292.

The product of its (nonzero) digits is 2800, while the sum is 30.

Adding to 2102111155722 its reverse (2275511112012), we get a palindrome (4377622267734).

The spelling of 2102111155722 in words is "two trillion, one hundred two billion, one hundred eleven million, one hundred fifty-five thousand, seven hundred twenty-two".