102011221200 has 240 divisors, whose sum is σ = 375068244096. Its totient is φ = 23216332800.

The previous prime is 102011221187. The next prime is 102011221211. The reversal of 102011221200 is 2122110201.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

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, 1931140 + ... + 1983260.

Almost surely, 2^102011221200 is an apocalyptic number.

102011221200 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 102011221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187534122048).

102011221200 is an abundant number, since it is smaller than the sum of its proper divisors (273057022896).

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

102011221200 is a wasteful number, since it uses less digits than its factorization.

102011221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52382 (or 52371 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102011221200 its reverse (2122110201), we get a palindrome (104133331401).

The spelling of 102011221200 in words is "one hundred two billion, eleven million, two hundred twenty-one thousand, two hundred".