21010012100107 has 2 divisors, whose sum is σ = 21010012100108. Its totient is φ = 21010012100106.

The previous prime is 21010012100101. The next prime is 21010012100111. The reversal of 21010012100107 is 70100121001012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21010012100107 - 2¹⁵ = 21010012067339 is a prime.

It is a super-2 number, since 2×21010012100107² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21010012100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505006050053 + 10505006050054.

It is an arithmetic number, because the mean of its divisors is an integer number (10505006050054).

Almost surely, 2^{21010012100107} is an apocalyptic number.

21010012100107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010012100107 is an equidigital number, since it uses as much as digits as its factorization.

21010012100107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 21010012100107 its reverse (70100121001012), we get a palindrome (91110133101119).

The spelling of 21010012100107 in words is "twenty-one trillion, ten billion, twelve million, one hundred thousand, one hundred seven".