11221420224 has 84 divisors (see below), whose sum is σ = 34537384824. Its totient is φ = 3206117376.

The previous prime is 11221420219. The next prime is 11221420229. The reversal of 11221420224 is 42202412211.

It is an interprime number because it is at equal distance from previous prime (11221420219) and next prime (11221420229).

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 11221420224.

It is not an unprimeable number, because it can be changed into a prime (11221420229) 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, 586969 + ... + 605784.

Almost surely, 2^11221420224 is an apocalyptic number.

11221420224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11221420224 is an abundant number, since it is smaller than the sum of its proper divisors (23315964600).

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

11221420224 is a wasteful number, since it uses less digits than its factorization.

11221420224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192782 (or 1192765 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 11221420224 its reverse (42202412211), we get a palindrome (53423832435).

The spelling of 11221420224 in words is "eleven billion, two hundred twenty-one million, four hundred twenty thousand, two hundred twenty-four".