111211442 has 8 divisors (see below), whose sum is σ = 167265516. Its totient is φ = 55456272.

The previous prime is 111211439. The next prime is 111211453. The reversal of 111211442 is 244112111.

It can be written as a sum of positive squares in 2 ways, for example, as 95043001 + 16168441 = 9749^2 + 4021^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 111211442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73793 + ... + 75284.

Almost surely, 2^111211442 is an apocalyptic number.

111211442 is a deficient number, since it is larger than the sum of its proper divisors (56054074).

111211442 is a wasteful number, since it uses less digits than its factorization.

111211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149452.

The product of its digits is 64, while the sum is 17.

The square root of 111211442 is about 10545.6835719644. The cubic root of 111211442 is about 480.8945154181.

Adding to 111211442 its reverse (244112111), we get a palindrome (355323553).

The spelling of 111211442 in words is "one hundred eleven million, two hundred eleven thousand, four hundred forty-two".