111257340737421 has 24 divisors (see below), whose sum is σ = 150818063691360. Its totient is φ = 72954074761920.

The previous prime is 111257340737401. The next prime is 111257340737423. The reversal of 111257340737421 is 124737043752111.

It is not a de Polignac number, because 111257340737421 - 2⁷ = 111257340737293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111257340737423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 775678650 + ... + 775822068.

It is an arithmetic number, because the mean of its divisors is an integer number (6284085987140).

Almost surely, 2^{111257340737421} is an apocalyptic number.

It is an amenable number.

111257340737421 is a deficient number, since it is larger than the sum of its proper divisors (39560722953939).

111257340737421 is an equidigital number, since it uses as much as digits as its factorization.

111257340737421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213037 (or 212976 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 111257340737421 in words is "one hundred eleven trillion, two hundred fifty-seven billion, three hundred forty million, seven hundred thirty-seven thousand, four hundred twenty-one".