102111011200 has 192 divisors, whose sum is σ = 277038630000. Its totient is φ = 36880179200.

The previous prime is 102111011159. The next prime is 102111011203. The reversal of 102111011200 is 2110111201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111011203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5235066 + ... + 5254534.

Almost surely, 2^102111011200 is an apocalyptic number.

102111011200 is a gapful number since it is divisible by the number (10) 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 102111011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138519315000).

102111011200 is an abundant number, since it is smaller than the sum of its proper divisors (174927618800).

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

102111011200 is a wasteful number, since it uses less digits than its factorization.

102111011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19653 (or 19636 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 102111011200 its reverse (2110111201), we get a palindrome (104221122401).

The spelling of 102111011200 in words is "one hundred two billion, one hundred eleven million, eleven thousand, two hundred".