111023421 has 8 divisors (see below), whose sum is σ = 152032224. Its totient is φ = 72015120.

The previous prime is 111023411. The next prime is 111023453. The reversal of 111023421 is 124320111.

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

It is not a de Polignac number, because 111023421 - 2⁵ = 111023389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111023421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111023401) 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, 499995 + ... + 500216.

It is an arithmetic number, because the mean of its divisors is an integer number (19004028).

Almost surely, 2^111023421 is an apocalyptic number.

It is an amenable number.

111023421 is a deficient number, since it is larger than the sum of its proper divisors (41008803).

111023421 is a wasteful number, since it uses less digits than its factorization.

111023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000251.

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

The square root of 111023421 is about 10536.7652056976. The cubic root of 111023421 is about 480.6233524587.

Adding to 111023421 its reverse (124320111), we get a palindrome (235343532).

It can be divided in two parts, 1110 and 23421, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 111023421 in words is "one hundred eleven million, twenty-three thousand, four hundred twenty-one".