11261421 has 12 divisors (see below), whose sum is σ = 16974048. Its totient is φ = 7181064.

The previous prime is 11261413. The next prime is 11261443. The reversal of 11261421 is 12416211.

It is not a de Polignac number, because 11261421 - 2³ = 11261413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11261394 and 11261403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11261461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26995 + ... + 27408.

It is an arithmetic number, because the mean of its divisors is an integer number (1414504).

Almost surely, 2^11261421 is an apocalyptic number.

It is an amenable number.

11261421 is a deficient number, since it is larger than the sum of its proper divisors (5712627).

11261421 is a wasteful number, since it uses less digits than its factorization.

11261421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54432 (or 54429 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 11261421 is about 3355.8040765218. The cubic root of 11261421 is about 224.1460370513.

Adding to 11261421 its reverse (12416211), we get a palindrome (23677632).

The spelling of 11261421 in words is "eleven million, two hundred sixty-one thousand, four hundred twenty-one".