111020021423 has 8 divisors (see below), whose sum is σ = 111561794400. Its totient is φ = 110478744288.

The previous prime is 111020021401. The next prime is 111020021479. The reversal of 111020021423 is 324120020111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020021423 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 (111020026423) 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, 328958 + ... + 574676.

It is an arithmetic number, because the mean of its divisors is an integer number (13945224300).

Almost surely, 2^111020021423 is an apocalyptic number.

111020021423 is a deficient number, since it is larger than the sum of its proper divisors (541772977).

111020021423 is a wasteful number, since it uses less digits than its factorization.

111020021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247921.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 111020021423 its reverse (324120020111), we get a palindrome (435140041534).

The spelling of 111020021423 in words is "one hundred eleven billion, twenty million, twenty-one thousand, four hundred twenty-three".