102120111200100 has 144 divisors (see below), whose sum is σ = 337764834528128. Its totient is φ = 23335679784960.

The previous prime is 102120111200071. The next prime is 102120111200113. The reversal of 102120111200100 is 1002111021201.

It is a super-2 number, since 2×102120111200100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1780812 + ... + 14401788.

Almost surely, 2^{102120111200100} is an apocalyptic number.

102120111200100 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 102120111200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168882417264064).

102120111200100 is an abundant number, since it is smaller than the sum of its proper divisors (235644723328028).

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

102120111200100 is a wasteful number, since it uses less digits than its factorization.

102120111200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12624854 (or 12624847 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102120111200100 its reverse (1002111021201), we get a palindrome (103122222221301).

The spelling of 102120111200100 in words is "one hundred two trillion, one hundred twenty billion, one hundred eleven million, two hundred thousand, one hundred".