31222302221401 has 4 divisors (see below), whose sum is σ = 31886606524032. Its totient is φ = 30557997918772.

The previous prime is 31222302221381. The next prime is 31222302221447. The reversal of 31222302221401 is 10412220322213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31222302221401 - 2⁷ = 31222302221273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31222302221801) 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, 332152151245 + ... + 332152151338.

It is an arithmetic number, because the mean of its divisors is an integer number (7971651631008).

Almost surely, 2^{31222302221401} is an apocalyptic number.

It is an amenable number.

31222302221401 is a deficient number, since it is larger than the sum of its proper divisors (664304302631).

31222302221401 is an equidigital number, since it uses as much as digits as its factorization.

31222302221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664304302630.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31222302221401 its reverse (10412220322213), we get a palindrome (41634522543614).

The spelling of 31222302221401 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred two million, two hundred twenty-one thousand, four hundred one".