111220402 has 8 divisors (see below), whose sum is σ = 169320816. Its totient is φ = 54780132.

The previous prime is 111220381. The next prime is 111220411. The reversal of 111220402 is 204022111.

It is a happy number.

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

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, 414868 + ... + 415135.

It is an arithmetic number, because the mean of its divisors is an integer number (21165102).

Almost surely, 2^111220402 is an apocalyptic number.

111220402 is a deficient number, since it is larger than the sum of its proper divisors (58100414).

111220402 is an equidigital number, since it uses as much as digits as its factorization.

111220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830072.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 111220402 is about 10546.1083817681. The cubic root of 111220402 is about 480.9074298541.

Adding to 111220402 its reverse (204022111), we get a palindrome (315242513).

The spelling of 111220402 in words is "one hundred eleven million, two hundred twenty thousand, four hundred two".