22201420 has 24 divisors (see below), whose sum is σ = 46852848. Its totient is φ = 8836800.

The previous prime is 22201411. The next prime is 22201429. The reversal of 22201420 is 2410222.

It is an interprime number because it is at equal distance from previous prime (22201411) and next prime (22201429).

It is a self number, because there is not a number n which added to its sum of digits gives 22201420.

It is not an unprimeable number, because it can be changed into a prime (22201429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 6850.

It is an arithmetic number, because the mean of its divisors is an integer number (1952202).

Almost surely, 2^22201420 is an apocalyptic number.

22201420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201420 is an abundant number, since it is smaller than the sum of its proper divisors (24651428).

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

22201420 is a wasteful number, since it uses less digits than its factorization.

22201420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5481 (or 5479 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22201420 is about 4711.8382824541. The cubic root of 22201420 is about 281.0564680108.

Adding to 22201420 its reverse (2410222), we get a palindrome (24611642).

The spelling of 22201420 in words is "twenty-two million, two hundred one thousand, four hundred twenty".