22220461 has 8 divisors (see below), whose sum is σ = 23814144. Its totient is φ = 20679120.

The previous prime is 22220453. The next prime is 22220489. The reversal of 22220461 is 16402222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22220461 - 2³ = 22220453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12205 + ... + 13906.

It is an arithmetic number, because the mean of its divisors is an integer number (2976768).

Almost surely, 2^22220461 is an apocalyptic number.

It is an amenable number.

22220461 is a deficient number, since it is larger than the sum of its proper divisors (1593683).

22220461 is a wasteful number, since it uses less digits than its factorization.

22220461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26171.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 22220461 is about 4713.8583983824. The cubic root of 22220461 is about 281.1367942093.

Adding to 22220461 its reverse (16402222), we get a palindrome (38622683).

The spelling of 22220461 in words is "twenty-two million, two hundred twenty thousand, four hundred sixty-one".