1111433421 has 32 divisors (see below), whose sum is σ = 1752678400. Its totient is φ = 613059840.

The previous prime is 1111433419. The next prime is 1111433441. The reversal of 1111433421 is 1243341111.

It is not a de Polignac number, because 1111433421 - 2¹ = 1111433419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111433441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283845 + ... + 287733.

It is an arithmetic number, because the mean of its divisors is an integer number (54771200).

Almost surely, 2^1111433421 is an apocalyptic number.

It is an amenable number.

1111433421 is a deficient number, since it is larger than the sum of its proper divisors (641244979).

1111433421 is a wasteful number, since it uses less digits than its factorization.

1111433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369.

The product of its digits is 288, while the sum is 21.

The square root of 1111433421 is about 33338.1676311101. The cubic root of 1111433421 is about 1035.8443081455.

Adding to 1111433421 its reverse (1243341111), we get a palindrome (2354774532).

The spelling of 1111433421 in words is "one billion, one hundred eleven million, four hundred thirty-three thousand, four hundred twenty-one".