111423102342121 has 8 divisors (see below), whose sum is σ = 116273545821504. Its totient is φ = 106573155593520.

The previous prime is 111423102342089. The next prime is 111423102342143. The reversal of 111423102342121 is 121243201324111.

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

It is a cyclic number.

It is not a de Polignac number, because 111423102342121 - 2⁵ = 111423102342089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111423102342121.

It is not an unprimeable number, because it can be changed into a prime (111423102342221) 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, 123724270 + ... + 124621591.

It is an arithmetic number, because the mean of its divisors is an integer number (14534193227688).

Almost surely, 2^{111423102342121} is an apocalyptic number.

It is an amenable number.

111423102342121 is a deficient number, since it is larger than the sum of its proper divisors (4850443479383).

111423102342121 is a wasteful number, since it uses less digits than its factorization.

111423102342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248365391.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 111423102342121 its reverse (121243201324111), we get a palindrome (232666303666232).

The spelling of 111423102342121 in words is "one hundred eleven trillion, four hundred twenty-three billion, one hundred two million, three hundred forty-two thousand, one hundred twenty-one".