22221331306 has 16 divisors (see below), whose sum is σ = 34536520800. Its totient is φ = 10716264208.

The previous prime is 22221331271. The next prime is 22221331313. The reversal of 22221331306 is 60313312222.

It is a super-2 number, since 2×22221331306² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770316 + ... + 1782823.

It is an arithmetic number, because the mean of its divisors is an integer number (2158532550).

Almost surely, 2^22221331306 is an apocalyptic number.

22221331306 is a deficient number, since it is larger than the sum of its proper divisors (12315189494).

22221331306 is a wasteful number, since it uses less digits than its factorization.

22221331306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553253.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 22221331306 its reverse (60313312222), we get a palindrome (82534643528).

The spelling of 22221331306 in words is "twenty-two billion, two hundred twenty-one million, three hundred thirty-one thousand, three hundred six".