31232221132222 has 128 divisors (see below), whose sum is σ = 55965134324736. Its totient is φ = 12912157440000.

The previous prime is 31232221132201. The next prime is 31232221132291. The reversal of 31232221132222 is 22223112223213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1535421772 + ... + 1535442112.

It is an arithmetic number, because the mean of its divisors is an integer number (437227611912).

Almost surely, 2^{31232221132222} is an apocalyptic number.

31232221132222 is a deficient number, since it is larger than the sum of its proper divisors (24732913192514).

31232221132222 is a wasteful number, since it uses less digits than its factorization.

31232221132222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21586.

The product of its digits is 6912, while the sum is 28.

Adding to 31232221132222 its reverse (22223112223213), we get a palindrome (53455333355435).

The spelling of 31232221132222 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty-two".