21100023101107 has 2 divisors, whose sum is σ = 21100023101108. Its totient is φ = 21100023101106.

The previous prime is 21100023101093. The next prime is 21100023101137. The reversal of 21100023101107 is 70110132000112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100023101107 - 2⁴³ = 12303930078899 is a prime.

It is a super-2 number, since 2×21100023101107² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21100023101137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550011550553 + 10550011550554.

It is an arithmetic number, because the mean of its divisors is an integer number (10550011550554).

Almost surely, 2^{21100023101107} is an apocalyptic number.

21100023101107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100023101107 is an equidigital number, since it uses as much as digits as its factorization.

21100023101107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 21100023101107 its reverse (70110132000112), we get a palindrome (91210155101219).

The spelling of 21100023101107 in words is "twenty-one trillion, one hundred billion, twenty-three million, one hundred one thousand, one hundred seven".