111203421243 has 8 divisors (see below), whose sum is σ = 148385200656. Its totient is φ = 74078628000.

The previous prime is 111203421239. The next prime is 111203421253. The reversal of 111203421243 is 342124302111.

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

It is not a de Polignac number, because 111203421243 - 2² = 111203421239 is a prime.

It is a super-2 number, since 2×111203421243² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111203421253) 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, 14241988 + ... + 14249793.

It is an arithmetic number, because the mean of its divisors is an integer number (18548150082).

Almost surely, 2^111203421243 is an apocalyptic number.

111203421243 is a deficient number, since it is larger than the sum of its proper divisors (37181779413).

111203421243 is a wasteful number, since it uses less digits than its factorization.

111203421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28493085.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 111203421243 its reverse (342124302111), we get a palindrome (453327723354).

The spelling of 111203421243 in words is "one hundred eleven billion, two hundred three million, four hundred twenty-one thousand, two hundred forty-three".