1200102201100 has 72 divisors (see below), whose sum is σ = 2841146623728. Its totient is φ = 436373548800.

The previous prime is 1200102201083. The next prime is 1200102201119. The reversal of 1200102201100 is 11022010021.

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

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, 28285102 + ... + 28327498.

It is an arithmetic number, because the mean of its divisors is an integer number (39460369774).

Almost surely, 2^{1200102201100} is an apocalyptic number.

1200102201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200102201100 is an abundant number, since it is smaller than the sum of its proper divisors (1641044422628).

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

1200102201100 is a wasteful number, since it uses less digits than its factorization.

1200102201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68155 (or 68148 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200102201100 its reverse (11022010021), we get a palindrome (1211124211121).

The spelling of 1200102201100 in words is "one trillion, two hundred billion, one hundred two million, two hundred one thousand, one hundred".