22331221022 has 32 divisors (see below), whose sum is σ = 36868055040. Its totient is φ = 10060152480.

The previous prime is 22331220971. The next prime is 22331221043. The reversal of 22331221022 is 22012213322.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22331220985 and 22331221003.

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, 3094943 + ... + 3102149.

It is an arithmetic number, because the mean of its divisors is an integer number (1152126720).

Almost surely, 2^22331221022 is an apocalyptic number.

22331221022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22331221022 is a deficient number, since it is larger than the sum of its proper divisors (14536834018).

22331221022 is a wasteful number, since it uses less digits than its factorization.

22331221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22331221022 its reverse (22012213322), we get a palindrome (44343434344).

The spelling of 22331221022 in words is "twenty-two billion, three hundred thirty-one million, two hundred twenty-one thousand, twenty-two".