1100421863 has 2 divisors, whose sum is σ = 1100421864. Its totient is φ = 1100421862.

The previous prime is 1100421827. The next prime is 1100421871. The reversal of 1100421863 is 3681240011.

It is a strong prime.

It is an emirp because it is prime and its reverse (3681240011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100421863 - 2¹⁸ = 1100159719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100421893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550210931 + 550210932.

It is an arithmetic number, because the mean of its divisors is an integer number (550210932).

Almost surely, 2^1100421863 is an apocalyptic number.

1100421863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100421863 is an equidigital number, since it uses as much as digits as its factorization.

1100421863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1100421863 is about 33172.6071179219. The cubic root of 1100421863 is about 1032.4120624647.

Adding to 1100421863 its reverse (3681240011), we get a palindrome (4781661874).

The spelling of 1100421863 in words is "one billion, one hundred million, four hundred twenty-one thousand, eight hundred sixty-three".