2222121222031 has 2 divisors, whose sum is σ = 2222121222032. Its totient is φ = 2222121222030.

The previous prime is 2222121222029. The next prime is 2222121222047. The reversal of 2222121222031 is 1302221212222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2222121222031 - 2¹ = 2222121222029 is a prime.

It is a super-2 number, since 2×2222121222031² (a number of 25 digits) contains 22 as substring.

Together with 2222121222029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2222121221993 and 2222121222011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222121228031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111060611015 + 1111060611016.

It is an arithmetic number, because the mean of its divisors is an integer number (1111060611016).

Almost surely, 2^{2222121222031} is an apocalyptic number.

2222121222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222121222031 is an equidigital number, since it uses as much as digits as its factorization.

2222121222031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 2222121222031 its reverse (1302221212222), we get a palindrome (3524342434253).

The spelling of 2222121222031 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, thirty-one".