111444332121 has 24 divisors (see below), whose sum is σ = 162585311616. Its totient is φ = 73553489280.

The previous prime is 111444332113. The next prime is 111444332137. The reversal of 111444332121 is 121233444111.

It is a happy number.

111444332121 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 443 + 3 + 212 + 1 = 666.

It is not a de Polignac number, because 111444332121 - 2³ = 111444332113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111444332221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3565441 + ... + 3596561.

It is an arithmetic number, because the mean of its divisors is an integer number (6774387984).

Almost surely, 2^111444332121 is an apocalyptic number.

It is an amenable number.

111444332121 is a deficient number, since it is larger than the sum of its proper divisors (51140979495).

111444332121 is a wasteful number, since it uses less digits than its factorization.

111444332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35093 (or 35090 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 111444332121 its reverse (121233444111), we get a palindrome (232677776232).

The spelling of 111444332121 in words is "one hundred eleven billion, four hundred forty-four million, three hundred thirty-two thousand, one hundred twenty-one".