11201421 has 16 divisors (see below), whose sum is σ = 18620928. Its totient is φ = 5818800.

The previous prime is 11201413. The next prime is 11201473. The reversal of 11201421 is 12410211.

It is a happy number.

It is not a de Polignac number, because 11201421 - 2³ = 11201413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11201397 and 11201406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201321) 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, 24015 + ... + 24476.

It is an arithmetic number, because the mean of its divisors is an integer number (1163808).

Almost surely, 2^11201421 is an apocalyptic number.

11201421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11201421 is a deficient number, since it is larger than the sum of its proper divisors (7419507).

11201421 is a wasteful number, since it uses less digits than its factorization.

11201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48512.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11201421 is about 3346.8524018845. The cubic root of 11201421 is about 223.7472502601.

Adding to 11201421 its reverse (12410211), we get a palindrome (23611632).

The spelling of 11201421 in words is "eleven million, two hundred one thousand, four hundred twenty-one".