22211420 has 48 divisors (see below), whose sum is σ = 58157568. Its totient is φ = 6922560.

The previous prime is 22211417. The next prime is 22211429. The reversal of 22211420 is 2411222.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22211395 and 22211404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211429) 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, 5672 + ... + 8751.

It is an arithmetic number, because the mean of its divisors is an integer number (1211616).

Almost surely, 2^22211420 is an apocalyptic number.

22211420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211420 is an abundant number, since it is smaller than the sum of its proper divisors (35946148).

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

22211420 is a wasteful number, since it uses less digits than its factorization.

22211420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14450 (or 14448 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22211420 is about 4712.8993199516. The cubic root of 22211420 is about 281.0986596485.

Adding to 22211420 its reverse (2411222), we get a palindrome (24622642).

The spelling of 22211420 in words is "twenty-two million, two hundred eleven thousand, four hundred twenty".