111425621 has 4 divisors (see below), whose sum is σ = 111720000. Its totient is φ = 111131244.

The previous prime is 111425617. The next prime is 111425641. The reversal of 111425621 is 126524111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111425621 - 2² = 111425617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111425641) 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, 146621 + ... + 147378.

It is an arithmetic number, because the mean of its divisors is an integer number (27930000).

Almost surely, 2^111425621 is an apocalyptic number.

It is an amenable number.

111425621 is a deficient number, since it is larger than the sum of its proper divisors (294379).

111425621 is an equidigital number, since it uses as much as digits as its factorization.

111425621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294378.

The product of its digits is 480, while the sum is 23.

The square root of 111425621 is about 10555.8335056972. The cubic root of 111425621 is about 481.2030312063.

Adding to 111425621 its reverse (126524111), we get a palindrome (237949732).

The spelling of 111425621 in words is "one hundred eleven million, four hundred twenty-five thousand, six hundred twenty-one".