10102021110257 has 2 divisors, whose sum is σ = 10102021110258. Its totient is φ = 10102021110256.

The previous prime is 10102021110169. The next prime is 10102021110263. The reversal of 10102021110257 is 75201112020101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9293620519936 + 808400590321 = 3048544^2 + 899111^2 .

It is an emirp because it is prime and its reverse (75201112020101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10102021110257 - 2¹² = 10102021106161 is a prime.

It is not a weakly prime, because it can be changed into another prime (10102021110287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051010555128 + 5051010555129.

It is an arithmetic number, because the mean of its divisors is an integer number (5051010555129).

Almost surely, 2^{10102021110257} is an apocalyptic number.

It is an amenable number.

10102021110257 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102021110257 is an equidigital number, since it uses as much as digits as its factorization.

10102021110257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 10102021110257 its reverse (75201112020101), we get a palindrome (85303133130358).

The spelling of 10102021110257 in words is "ten trillion, one hundred two billion, twenty-one million, one hundred ten thousand, two hundred fifty-seven".