127282221 has 12 divisors (see below), whose sum is σ = 200566080. Its totient is φ = 77140680.

The previous prime is 127282219. The next prime is 127282231. The reversal of 127282221 is 122282721.

It is not a de Polignac number, because 127282221 - 2¹ = 127282219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127282201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642741 + ... + 642938.

It is an arithmetic number, because the mean of its divisors is an integer number (16713840).

Almost surely, 2^127282221 is an apocalyptic number.

127282221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

127282221 is a deficient number, since it is larger than the sum of its proper divisors (73283859).

127282221 is a wasteful number, since it uses less digits than its factorization.

127282221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285696 (or 1285693 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 127282221 is about 11281.9422529988. The cubic root of 127282221 is about 503.0246276941.

The spelling of 127282221 in words is "one hundred twenty-seven million, two hundred eighty-two thousand, two hundred twenty-one".