111542451301421 has 16 divisors (see below), whose sum is σ = 129901840504704. Its totient is φ = 93789792792384.

The previous prime is 111542451301387. The next prime is 111542451301429. The reversal of 111542451301421 is 124103154245111.

It is a cyclic number.

It is not a de Polignac number, because 111542451301421 - 2¹⁴ = 111542451285037 is a prime.

It is a super-3 number, since 3×111542451301421³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111542451301429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20127071 + ... + 25063596.

It is an arithmetic number, because the mean of its divisors is an integer number (8118865031544).

Almost surely, 2^{111542451301421} is an apocalyptic number.

It is an amenable number.

111542451301421 is a deficient number, since it is larger than the sum of its proper divisors (18359389203283).

111542451301421 is an equidigital number, since it uses as much as digits as its factorization.

111542451301421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45197380.

The product of its (nonzero) digits is 19200, while the sum is 35.

The spelling of 111542451301421 in words is "one hundred eleven trillion, five hundred forty-two billion, four hundred fifty-one million, three hundred one thousand, four hundred twenty-one".