2021213093 has 2 divisors, whose sum is σ = 2021213094. Its totient is φ = 2021213092.

The previous prime is 2021213083. The next prime is 2021213137. The reversal of 2021213093 is 3903121202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1436637409 + 584575684 = 37903^2 + 24178^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021213093 - 2²⁴ = 2004435877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021213083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010606546 + 1010606547.

It is an arithmetic number, because the mean of its divisors is an integer number (1010606547).

Almost surely, 2^2021213093 is an apocalyptic number.

It is an amenable number.

2021213093 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021213093 is an equidigital number, since it uses as much as digits as its factorization.

2021213093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2021213093 is about 44957.9035654466. The cubic root of 2021213093 is about 1264.3598635958.

Adding to 2021213093 its reverse (3903121202), we get a palindrome (5924334295).

The spelling of 2021213093 in words is "two billion, twenty-one million, two hundred thirteen thousand, ninety-three".