210221112010031 has 2 divisors, whose sum is σ = 210221112010032. Its totient is φ = 210221112010030.

The previous prime is 210221112009971. The next prime is 210221112010037. The reversal of 210221112010031 is 130010211122012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210221112010031 - 2⁶ = 210221112009967 is a prime.

It is a super-2 number, since 2×210221112010031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210221112009991 and 210221112010009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210221112010037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110556005015 + 105110556005016.

It is an arithmetic number, because the mean of its divisors is an integer number (105110556005016).

Almost surely, 2^{210221112010031} is an apocalyptic number.

210221112010031 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221112010031 is an equidigital number, since it uses as much as digits as its factorization.

210221112010031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 210221112010031 its reverse (130010211122012), we get a palindrome (340231323132043).

The spelling of 210221112010031 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred twelve million, ten thousand, thirty-one".