1001021092900 has 72 divisors (see below), whose sum is σ = 2353481555040. Its totient is φ = 368090903040.

The previous prime is 1001021092837. The next prime is 1001021092961. The reversal of 1001021092900 is 92901201001.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 6773830 + ... + 6920029.

It is an arithmetic number, because the mean of its divisors is an integer number (32687243820).

Almost surely, 2^{1001021092900} is an apocalyptic number.

1001021092900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001021092900 is an abundant number, since it is smaller than the sum of its proper divisors (1352460462140).

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

1001021092900 is a wasteful number, since it uses less digits than its factorization.

1001021092900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13693933 (or 13693926 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

Adding to 1001021092900 its reverse (92901201001), we get a palindrome (1093922293901).

The spelling of 1001021092900 in words is "one trillion, one billion, twenty-one million, ninety-two thousand, nine hundred".