21113122231222 has 64 divisors (see below), whose sum is σ = 38209487339520. Its totient is φ = 8547386829984.

The previous prime is 21113122231217. The next prime is 21113122231303. The reversal of 21113122231222 is 22213222131112.

It is a super-2 number, since 2×21113122231222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147507663 + ... + 147650725.

It is an arithmetic number, because the mean of its divisors is an integer number (597023239680).

Almost surely, 2^{21113122231222} is an apocalyptic number.

21113122231222 is a deficient number, since it is larger than the sum of its proper divisors (17096365108298).

21113122231222 is a wasteful number, since it uses less digits than its factorization.

21113122231222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144697.

The product of its digits is 1152, while the sum is 25.

Adding to 21113122231222 its reverse (22213222131112), we get a palindrome (43326344362334).

The spelling of 21113122231222 in words is "twenty-one trillion, one hundred thirteen billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred twenty-two".