111021423 has 8 divisors (see below), whose sum is σ = 152029488. Its totient is φ = 72013824.

The previous prime is 111021409. The next prime is 111021431. The reversal of 111021423 is 324120111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111021423 - 2¹⁴ = 111005039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499986 + ... + 500207.

It is an arithmetic number, because the mean of its divisors is an integer number (19003686).

Almost surely, 2^111021423 is an apocalyptic number.

111021423 is a deficient number, since it is larger than the sum of its proper divisors (41008065).

111021423 is a wasteful number, since it uses less digits than its factorization.

111021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000233.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 111021423 is about 10536.6703943893. The cubic root of 111021423 is about 480.6204693096.

Adding to 111021423 its reverse (324120111), we get a palindrome (435141534).

The spelling of 111021423 in words is "one hundred eleven million, twenty-one thousand, four hundred twenty-three".