21200101201127 has 2 divisors, whose sum is σ = 21200101201128. Its totient is φ = 21200101201126.

The previous prime is 21200101201043. The next prime is 21200101201199. The reversal of 21200101201127 is 72110210100212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21200101201127 - 2²⁰ = 21200100152551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21200101201099 and 21200101201108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200101207127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600050600563 + 10600050600564.

It is an arithmetic number, because the mean of its divisors is an integer number (10600050600564).

Almost surely, 2^{21200101201127} is an apocalyptic number.

21200101201127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200101201127 is an equidigital number, since it uses as much as digits as its factorization.

21200101201127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 21200101201127 its reverse (72110210100212), we get a palindrome (93310311301339).

The spelling of 21200101201127 in words is "twenty-one trillion, two hundred billion, one hundred one million, two hundred one thousand, one hundred twenty-seven".