21110230100357 has 2 divisors, whose sum is σ = 21110230100358. Its totient is φ = 21110230100356.

The previous prime is 21110230100317. The next prime is 21110230100359. The reversal of 21110230100357 is 75300103201112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11361760059841 + 9748470040516 = 3370721^2 + 3122254^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110230100357 - 2¹⁰ = 21110230099333 is a prime.

Together with 21110230100359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110230100359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555115050178 + 10555115050179.

It is an arithmetic number, because the mean of its divisors is an integer number (10555115050179).

Almost surely, 2^{21110230100357} is an apocalyptic number.

It is an amenable number.

21110230100357 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110230100357 is an equidigital number, since it uses as much as digits as its factorization.

21110230100357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

Adding to 21110230100357 its reverse (75300103201112), we get a palindrome (96410333301469).

The spelling of 21110230100357 in words is "twenty-one trillion, one hundred ten billion, two hundred thirty million, one hundred thousand, three hundred fifty-seven".