111201421023 has 32 divisors (see below), whose sum is σ = 205393681920. Its totient is φ = 57766970880.

The previous prime is 111201420989. The next prime is 111201421061. The reversal of 111201421023 is 320124102111.

It is not a de Polignac number, because 111201421023 - 2⁹ = 111201420511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111201420987 and 111201421005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111206421023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26741890 + ... + 26746047.

It is an arithmetic number, because the mean of its divisors is an integer number (6418552560).

Almost surely, 2^111201421023 is an apocalyptic number.

111201421023 is a deficient number, since it is larger than the sum of its proper divisors (94192260897).

111201421023 is a wasteful number, since it uses less digits than its factorization.

111201421023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53487964 (or 53487958 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111201421023 its reverse (320124102111), we get a palindrome (431325523134).

The spelling of 111201421023 in words is "one hundred eleven billion, two hundred one million, four hundred twenty-one thousand, twenty-three".