21022122012127 has 2 divisors, whose sum is σ = 21022122012128. Its totient is φ = 21022122012126.

The previous prime is 21022122012121. The next prime is 21022122012161. The reversal of 21022122012127 is 72121022122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022122012127 - 2³¹ = 21019974528479 is a prime.

It is a super-2 number, since 2×21022122012127² (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 (21022122012121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511061006063 + 10511061006064.

It is an arithmetic number, because the mean of its divisors is an integer number (10511061006064).

Almost surely, 2^{21022122012127} is an apocalyptic number.

21022122012127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022122012127 is an equidigital number, since it uses as much as digits as its factorization.

21022122012127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 21022122012127 its reverse (72121022122012), we get a palindrome (93143144134139).

The spelling of 21022122012127 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-two million, twelve thousand, one hundred twenty-seven".