1111167421 has 16 divisors (see below), whose sum is σ = 1427053824. Its totient is φ = 840939264.

The previous prime is 1111167401. The next prime is 1111167427. The reversal of 1111167421 is 1247611111.

It is a cyclic number.

It is not a de Polignac number, because 1111167421 - 2⁵ = 1111167389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111167427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263356 + ... + 267541.

It is an arithmetic number, because the mean of its divisors is an integer number (89190864).

Almost surely, 2^1111167421 is an apocalyptic number.

It is an amenable number.

1111167421 is a deficient number, since it is larger than the sum of its proper divisors (315886403).

1111167421 is a wasteful number, since it uses less digits than its factorization.

1111167421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530940.

The product of its digits is 336, while the sum is 25.

The square root of 1111167421 is about 33334.1779709655. The cubic root of 1111167421 is about 1035.7616651474.

Adding to 1111167421 its reverse (1247611111), we get a palindrome (2358778532).

The spelling of 1111167421 in words is "one billion, one hundred eleven million, one hundred sixty-seven thousand, four hundred twenty-one".