20202101393 has 2 divisors, whose sum is σ = 20202101394. Its totient is φ = 20202101392.

The previous prime is 20202101299. The next prime is 20202101399. The reversal of 20202101393 is 39310120202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17115965584 + 3086135809 = 130828^2 + 55553^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202101393 - 2²⁸ = 19933665937 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202101399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101050696 + 10101050697.

It is an arithmetic number, because the mean of its divisors is an integer number (10101050697).

Almost surely, 2^20202101393 is an apocalyptic number.

It is an amenable number.

20202101393 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202101393 is an equidigital number, since it uses as much as digits as its factorization.

20202101393 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20202101393 its reverse (39310120202), we get a palindrome (59512221595).

The spelling of 20202101393 in words is "twenty billion, two hundred two million, one hundred one thousand, three hundred ninety-three".