20200221313 has 2 divisors, whose sum is σ = 20200221314. Its totient is φ = 20200221312.

The previous prime is 20200221257. The next prime is 20200221361. The reversal of 20200221313 is 31312200202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16194344049 + 4005877264 = 127257^2 + 63292^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200221313 - 2⁹ = 20200220801 is a prime.

It is a super-3 number, since 3×20200221313³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20200221383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100110656 + 10100110657.

It is an arithmetic number, because the mean of its divisors is an integer number (10100110657).

Almost surely, 2^20200221313 is an apocalyptic number.

It is an amenable number.

20200221313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200221313 is an equidigital number, since it uses as much as digits as its factorization.

20200221313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20200221313 its reverse (31312200202), we get a palindrome (51512421515).

The spelling of 20200221313 in words is "twenty billion, two hundred million, two hundred twenty-one thousand, three hundred thirteen".