21022110107 has 2 divisors, whose sum is σ = 21022110108. Its totient is φ = 21022110106.

The previous prime is 21022110091. The next prime is 21022110139. The reversal of 21022110107 is 70101122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022110107 - 2⁴ = 21022110091 is a prime.

It is a super-2 number, since 2×21022110107² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21022310107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511055053 + 10511055054.

It is an arithmetic number, because the mean of its divisors is an integer number (10511055054).

Almost surely, 2^21022110107 is an apocalyptic number.

21022110107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022110107 is an equidigital number, since it uses as much as digits as its factorization.

21022110107 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 21022110107 its reverse (70101122012), we get a palindrome (91123232119).

The spelling of 21022110107 in words is "twenty-one billion, twenty-two million, one hundred ten thousand, one hundred seven".