21000201102107 has 2 divisors, whose sum is σ = 21000201102108. Its totient is φ = 21000201102106.

The previous prime is 21000201102071. The next prime is 21000201102137. The reversal of 21000201102107 is 70120110200012.

Together with previous prime (21000201102071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000201102107 - 2¹² = 21000201098011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21000201102137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500100551053 + 10500100551054.

It is an arithmetic number, because the mean of its divisors is an integer number (10500100551054).

Almost surely, 2^{21000201102107} is an apocalyptic number.

21000201102107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000201102107 is an equidigital number, since it uses as much as digits as its factorization.

21000201102107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 21000201102107 its reverse (70120110200012), we get a palindrome (91120311302119).

The spelling of 21000201102107 in words is "twenty-one trillion, two hundred one million, one hundred two thousand, one hundred seven".