2102122101200 has 120 divisors (see below), whose sum is σ = 5511379436640. Its totient is φ = 764143244800.

The previous prime is 2102122101187. The next prime is 2102122101259. The reversal of 2102122101200 is 21012212012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12850322 + ... + 13012878.

It is an arithmetic number, because the mean of its divisors is an integer number (45928161972).

Almost surely, 2^{2102122101200} is an apocalyptic number.

2102122101200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102122101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2755689718320).

2102122101200 is an abundant number, since it is smaller than the sum of its proper divisors (3409257335440).

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

2102122101200 is a wasteful number, since it uses less digits than its factorization.

2102122101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165525 (or 165514 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2102122101200 its reverse (21012212012), we get a palindrome (2123134313212).

The spelling of 2102122101200 in words is "two trillion, one hundred two billion, one hundred twenty-two million, one hundred one thousand, two hundred".