20210000202257 has 2 divisors, whose sum is σ = 20210000202258. Its totient is φ = 20210000202256.

The previous prime is 20210000202193. The next prime is 20210000202263. The reversal of 20210000202257 is 75220200001202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19633371073936 + 576629128321 = 4430956^2 + 759361^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210000202257 - 2⁶ = 20210000202193 is a prime.

It is a super-3 number, since 3×20210000202257³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20210000204257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105000101128 + 10105000101129.

It is an arithmetic number, because the mean of its divisors is an integer number (10105000101129).

Almost surely, 2^{20210000202257} is an apocalyptic number.

It is an amenable number.

20210000202257 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210000202257 is an equidigital number, since it uses as much as digits as its factorization.

20210000202257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 20210000202257 its reverse (75220200001202), we get a palindrome (95430200203459).

The spelling of 20210000202257 in words is "twenty trillion, two hundred ten billion, two hundred two thousand, two hundred fifty-seven".