31222101201233 has 4 divisors (see below), whose sum is σ = 31296262962228. Its totient is φ = 31147939440240.

The previous prime is 31222101201217. The next prime is 31222101201257. The reversal of 31222101201233 is 33210210122213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2513851473169 + 28708249728064 = 1585513^2 + 5358008^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222101201233 - 2⁴ = 31222101201217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31222101201199 and 31222101201208.

It is not an unprimeable number, because it can be changed into a prime (31222101281233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37080879866 + ... + 37080880707.

It is an arithmetic number, because the mean of its divisors is an integer number (7824065740557).

Almost surely, 2^{31222101201233} is an apocalyptic number.

It is an amenable number.

31222101201233 is a deficient number, since it is larger than the sum of its proper divisors (74161760995).

31222101201233 is an equidigital number, since it uses as much as digits as its factorization.

31222101201233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74161760994.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31222101201233 its reverse (33210210122213), we get a palindrome (64432311323446).

The spelling of 31222101201233 in words is "thirty-one trillion, two hundred twenty-two billion, one hundred one million, two hundred one thousand, two hundred thirty-three".