31100221222 has 8 divisors (see below), whose sum is σ = 53314664976. Its totient is φ = 13328666232.

The previous prime is 31100221219. The next prime is 31100221223. The reversal of 31100221222 is 22212200113.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 31100221196 and 31100221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110722173 + ... + 1110722200.

It is an arithmetic number, because the mean of its divisors is an integer number (6664333122).

Almost surely, 2^31100221222 is an apocalyptic number.

31100221222 is a deficient number, since it is larger than the sum of its proper divisors (22214443754).

31100221222 is a wasteful number, since it uses less digits than its factorization.

31100221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221444382.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31100221222 its reverse (22212200113), we get a palindrome (53312421335).

The spelling of 31100221222 in words is "thirty-one billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-two".