221011000127 has 2 divisors, whose sum is σ = 221011000128. Its totient is φ = 221011000126.

The previous prime is 221011000121. The next prime is 221011000181. The reversal of 221011000127 is 721000110122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221011000127 - 2²⁰ = 221009951551 is a prime.

It is a super-2 number, since 2×221011000127² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221011000121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505500063 + 110505500064.

It is an arithmetic number, because the mean of its divisors is an integer number (110505500064).

Almost surely, 2^221011000127 is an apocalyptic number.

221011000127 is a deficient number, since it is larger than the sum of its proper divisors (1).

221011000127 is an equidigital number, since it uses as much as digits as its factorization.

221011000127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 221011000127 its reverse (721000110122), we get a palindrome (942011110249).

The spelling of 221011000127 in words is "two hundred twenty-one billion, eleven million, one hundred twenty-seven", and thus it is an aban number.