11221401420 has 60 divisors (see below), whose sum is σ = 35201956944. Its totient is φ = 2992373280.

The previous prime is 11221401413. The next prime is 11221401427. The reversal of 11221401420 is 2410412211.

11221401420 is a `hidden beast` number, since 1 + 1 + 221 + 401 + 42 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (11221401413) and next prime (11221401427).

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11221401393 and 11221401402.

It is not an unprimeable number, because it can be changed into a prime (11221401427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3461776 + ... + 3465015.

Almost surely, 2^11221401420 is an apocalyptic number.

11221401420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221401420 is an abundant number, since it is smaller than the sum of its proper divisors (23980555524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221401420 is a wasteful number, since it uses less digits than its factorization.

11221401420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926812 (or 6926801 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11221401420 its reverse (2410412211), we get a palindrome (13631813631).

The spelling of 11221401420 in words is "eleven billion, two hundred twenty-one million, four hundred one thousand, four hundred twenty".