22221276 has 48 divisors (see below), whose sum is σ = 64646400. Its totient is φ = 5771520.

The previous prime is 22221259. The next prime is 22221299. The reversal of 22221276 is 67212222.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11101 + ... + 12948.

It is an arithmetic number, because the mean of its divisors is an integer number (1346800).

Almost surely, 2^22221276 is an apocalyptic number.

It is an amenable number.

22221276 is an abundant number, since it is smaller than the sum of its proper divisors (42425124).

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

22221276 is a wasteful number, since it uses less digits than its factorization.

22221276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24074 (or 24072 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 22221276 is about 4713.9448448195. The cubic root of 22221276 is about 281.1402313370.

Adding to 22221276 its reverse (67212222), we get a palindrome (89433498).

The spelling of 22221276 in words is "twenty-two million, two hundred twenty-one thousand, two hundred seventy-six".