21022200120127 has 2 divisors, whose sum is σ = 21022200120128. Its totient is φ = 21022200120126.

The previous prime is 21022200120121. The next prime is 21022200120203. The reversal of 21022200120127 is 72102100222012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21022200120127 - 2²⁷ = 21022065902399 is a prime.

It is a super-2 number, since 2×21022200120127² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022200120098 and 21022200120107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022200120121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511100060063 + 10511100060064.

It is an arithmetic number, because the mean of its divisors is an integer number (10511100060064).

Almost surely, 2^{21022200120127} is an apocalyptic number.

21022200120127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022200120127 is an equidigital number, since it uses as much as digits as its factorization.

21022200120127 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 22.

Adding to 21022200120127 its reverse (72102100222012), we get a palindrome (93124300342139).

The spelling of 21022200120127 in words is "twenty-one trillion, twenty-two billion, two hundred million, one hundred twenty thousand, one hundred twenty-seven".