11110421671 has 6 divisors (see below), whose sum is σ = 11252846472. Its totient is φ = 10969777260.

The previous prime is 11110421639. The next prime is 11110421683. The reversal of 11110421671 is 17612401111.

It is not a de Polignac number, because 11110421671 - 2⁵ = 11110421639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110421071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 883875 + ... + 896356.

It is an arithmetic number, because the mean of its divisors is an integer number (1875474412).

Almost surely, 2^11110421671 is an apocalyptic number.

11110421671 is a deficient number, since it is larger than the sum of its proper divisors (142424801).

11110421671 is an frugal number, since it uses more digits than its factorization.

11110421671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780389 (or 1780310 counting only the distinct ones).

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

Adding to 11110421671 its reverse (17612401111), we get a palindrome (28722822782).

The spelling of 11110421671 in words is "eleven billion, one hundred ten million, four hundred twenty-one thousand, six hundred seventy-one".