31221141222 has 8 divisors (see below), whose sum is σ = 62442282456. Its totient is φ = 10407047072.

The previous prime is 31221141163. The next prime is 31221141227. The reversal of 31221141222 is 22214112213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

31221141222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31221141227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2601761763 + ... + 2601761774.

It is an arithmetic number, because the mean of its divisors is an integer number (7805285307).

Almost surely, 2^31221141222 is an apocalyptic number.

31221141222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31221141222 is a wasteful number, since it uses less digits than its factorization.

31221141222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203523542.

The product of its digits is 384, while the sum is 21.

Adding to 31221141222 its reverse (22214112213), we get a palindrome (53435253435).

The spelling of 31221141222 in words is "thirty-one billion, two hundred twenty-one million, one hundred forty-one thousand, two hundred twenty-two".