1116261421 has 24 divisors (see below), whose sum is σ = 1258975872. Its totient is φ = 988521600.

The previous prime is 1116261379. The next prime is 1116261427. The reversal of 1116261421 is 1241626111.

It is not a de Polignac number, because 1116261421 - 2²⁷ = 982043693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116261427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1882101 + ... + 1882693.

It is an arithmetic number, because the mean of its divisors is an integer number (52457328).

Almost surely, 2^1116261421 is an apocalyptic number.

1116261421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1116261421 is a deficient number, since it is larger than the sum of its proper divisors (142714451).

1116261421 is a wasteful number, since it uses less digits than its factorization.

1116261421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 982 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 1116261421 is about 33410.4986643420. The cubic root of 1116261421 is about 1037.3420233846.

Adding to 1116261421 its reverse (1241626111), we get a palindrome (2357887532).

The spelling of 1116261421 in words is "one billion, one hundred sixteen million, two hundred sixty-one thousand, four hundred twenty-one".