111021404 has 12 divisors (see below), whose sum is σ = 209232744. Its totient is φ = 51240624.

The previous prime is 111021401. The next prime is 111021409. The reversal of 111021404 is 404120111.

It is a super-2 number, since 2×111021404² = 24651504292262432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111021401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067462 + ... + 1067565.

It is an arithmetic number, because the mean of its divisors is an integer number (17436062).

Almost surely, 2^111021404 is an apocalyptic number.

It is an amenable number.

111021404 is a deficient number, since it is larger than the sum of its proper divisors (98211340).

111021404 is a wasteful number, since it uses less digits than its factorization.

111021404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135044 (or 2135042 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 111021404 is about 10536.6694927762. The cubic root of 111021404 is about 480.6204418921.

Adding to 111021404 its reverse (404120111), we get a palindrome (515141515).

The spelling of 111021404 in words is "one hundred eleven million, twenty-one thousand, four hundred four".