2102123111320 has 16 divisors (see below), whose sum is σ = 4729777000560. Its totient is φ = 840849244512.

The previous prime is 2102123111317. The next prime is 2102123111323. The reversal of 2102123111320 is 231113212012.

It is an interprime number because it is at equal distance from previous prime (2102123111317) and next prime (2102123111323).

It is a super-2 number, since 2×2102123111320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102123111323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26276538852 + ... + 26276538931.

It is an arithmetic number, because the mean of its divisors is an integer number (295611062535).

Almost surely, 2^{2102123111320} is an apocalyptic number.

2102123111320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102123111320 is an abundant number, since it is smaller than the sum of its proper divisors (2627653889240).

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

2102123111320 is a wasteful number, since it uses less digits than its factorization.

2102123111320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52553077794 (or 52553077790 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2102123111320 its reverse (231113212012), we get a palindrome (2333236323332).

The spelling of 2102123111320 in words is "two trillion, one hundred two billion, one hundred twenty-three million, one hundred eleven thousand, three hundred twenty".