20100216127 has 2 divisors, whose sum is σ = 20100216128. Its totient is φ = 20100216126.

The previous prime is 20100216113. The next prime is 20100216137. The reversal of 20100216127 is 72161200102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20100216127 is a prime.

It is a super-2 number, since 2×20100216127² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20100216098 and 20100216107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100216107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050108063 + 10050108064.

It is an arithmetic number, because the mean of its divisors is an integer number (10050108064).

Almost surely, 2^20100216127 is an apocalyptic number.

20100216127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100216127 is an equidigital number, since it uses as much as digits as its factorization.

20100216127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 20100216127 its reverse (72161200102), we get a palindrome (92261416229).

The spelling of 20100216127 in words is "twenty billion, one hundred million, two hundred sixteen thousand, one hundred twenty-seven".