11221421401 has 4 divisors (see below), whose sum is σ = 11709309312. Its totient is φ = 10733533492.

The previous prime is 11221421381. The next prime is 11221421441. The reversal of 11221421401 is 10412412211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11221421401 - 2⁵ = 11221421369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221421441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243943921 + ... + 243943966.

It is an arithmetic number, because the mean of its divisors is an integer number (2927327328).

Almost surely, 2^11221421401 is an apocalyptic number.

It is an amenable number.

11221421401 is a deficient number, since it is larger than the sum of its proper divisors (487887911).

11221421401 is an equidigital number, since it uses as much as digits as its factorization.

11221421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487887910.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11221421401 its reverse (10412412211), we get a palindrome (21633833612).

The spelling of 11221421401 in words is "eleven billion, two hundred twenty-one million, four hundred twenty-one thousand, four hundred one".