22010312021 has 2 divisors, whose sum is σ = 22010312022. Its totient is φ = 22010312020.

The previous prime is 22010312011. The next prime is 22010312087. The reversal of 22010312021 is 12021301022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21430032100 + 580279921 = 146390^2 + 24089^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010312021 - 2¹⁸ = 22010049877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22010311987 and 22010312005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22010312011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005156010 + 11005156011.

It is an arithmetic number, because the mean of its divisors is an integer number (11005156011).

Almost surely, 2^22010312021 is an apocalyptic number.

It is an amenable number.

22010312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22010312021 is an equidigital number, since it uses as much as digits as its factorization.

22010312021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22010312021 its reverse (12021301022), we get a palindrome (34031613043).

The spelling of 22010312021 in words is "twenty-two billion, ten million, three hundred twelve thousand, twenty-one".