1099271907072 has 126 divisors (see below), whose sum is σ = 3289870260992. Its totient is φ = 366423906816.

The previous prime is 1099271907049. The next prime is 1099271907073. The reversal of 1099271907072 is 2707091729901.

It is a super-2 number, since 2×1099271907072² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099271907073) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2758528 + ... + 3131775.

Almost surely, 2^{1099271907072} is an apocalyptic number.

1099271907072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1099271907072 is an abundant number, since it is smaller than the sum of its proper divisors (2190598353920).

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

1099271907072 is an frugal number, since it uses more digits than its factorization.

1099271907072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890337 (or 5890308 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 54.

The spelling of 1099271907072 in words is "one trillion, ninety-nine billion, two hundred seventy-one million, nine hundred seven thousand, seventy-two".