1101271923520 has 28 divisors (see below), whose sum is σ = 2622403768644. Its totient is φ = 440508769280.

The previous prime is 1101271923509. The next prime is 1101271923523. The reversal of 1101271923520 is 253291721011.

It can be written as a sum of positive squares in 2 ways, for example, as 386476075584 + 714795847936 = 621672^2 + 845456^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101271923523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720737061 + ... + 1720737700.

Almost surely, 2^{1101271923520} is an apocalyptic number.

1101271923520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101271923520 is an abundant number, since it is smaller than the sum of its proper divisors (1521131845124).

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

1101271923520 is an equidigital number, since it uses as much as digits as its factorization.

1101271923520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441474778 (or 3441474768 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 1101271923520 in words is "one trillion, one hundred one billion, two hundred seventy-one million, nine hundred twenty-three thousand, five hundred twenty".