102001001200 has 60 divisors (see below), whose sum is σ = 280065613840. Its totient is φ = 34971770880.

The previous prime is 102001001191. The next prime is 102001001227. The reversal of 102001001200 is 2100100201.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18211665 + ... + 18217264.

Almost surely, 2^102001001200 is an apocalyptic number.

102001001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102001001200 is an abundant number, since it is smaller than the sum of its proper divisors (178064612640).

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

102001001200 is a wasteful number, since it uses less digits than its factorization.

102001001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36428954 (or 36428943 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 102001001200 its reverse (2100100201), we get a palindrome (104101101401).

Subtracting from 102001001200 its reverse (2100100201), we obtain a palindrome (99900900999).

The spelling of 102001001200 in words is "one hundred two billion, one million, one thousand, two hundred".