1200100421140 has 96 divisors (see below), whose sum is σ = 2931030385920. Its totient is φ = 409413666816.

The previous prime is 1200100421101. The next prime is 1200100421161. The reversal of 1200100421140 is 411240010021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3889987 + ... + 4187146.

It is an arithmetic number, because the mean of its divisors is an integer number (30531566520).

Almost surely, 2^{1200100421140} is an apocalyptic number.

1200100421140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200100421140 is an abundant number, since it is smaller than the sum of its proper divisors (1730929964780).

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

1200100421140 is a wasteful number, since it uses less digits than its factorization.

1200100421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8077201 (or 8077199 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1200100421140 its reverse (411240010021), we get a palindrome (1611340431161).

The spelling of 1200100421140 in words is "one trillion, two hundred billion, one hundred million, four hundred twenty-one thousand, one hundred forty".