20012122210127 has 2 divisors, whose sum is σ = 20012122210128. Its totient is φ = 20012122210126.

The previous prime is 20012122210063. The next prime is 20012122210193. The reversal of 20012122210127 is 72101222121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012122210127 - 2⁶ = 20012122210063 is a prime.

It is a super-2 number, since 2×20012122210127² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012122210027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006061105063 + 10006061105064.

It is an arithmetic number, because the mean of its divisors is an integer number (10006061105064).

Almost surely, 2^{20012122210127} is an apocalyptic number.

20012122210127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012122210127 is an equidigital number, since it uses as much as digits as its factorization.

20012122210127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 20012122210127 its reverse (72101222121002), we get a palindrome (92113344331129).

The spelling of 20012122210127 in words is "twenty trillion, twelve billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty-seven".