21202221201127 has 2 divisors, whose sum is σ = 21202221201128. Its totient is φ = 21202221201126.

The previous prime is 21202221201053. The next prime is 21202221201173. The reversal of 21202221201127 is 72110212220212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21202221201127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202221201727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601110600563 + 10601110600564.

It is an arithmetic number, because the mean of its divisors is an integer number (10601110600564).

Almost surely, 2^{21202221201127} is an apocalyptic number.

21202221201127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202221201127 is an equidigital number, since it uses as much as digits as its factorization.

21202221201127 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21202221201127 its reverse (72110212220212), we get a palindrome (93312433421339).

The spelling of 21202221201127 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty-seven".