127372221 has 12 divisors (see below), whose sum is σ = 184272348. Its totient is φ = 84780864.

The previous prime is 127372213. The next prime is 127372243. The reversal of 127372221 is 122273721.

It can be written as a sum of positive squares in 2 ways, for example, as 88172100 + 39200121 = 9390^2 + 6261^2 .

It is not a de Polignac number, because 127372221 - 2³ = 127372213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127377221) 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, 4960 + ... + 16713.

It is an arithmetic number, because the mean of its divisors is an integer number (15356029).

Almost surely, 2^127372221 is an apocalyptic number.

It is an amenable number.

127372221 is a deficient number, since it is larger than the sum of its proper divisors (56900127).

127372221 is a wasteful number, since it uses less digits than its factorization.

127372221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22332 (or 22329 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 127372221 is about 11285.9302230698. The cubic root of 127372221 is about 503.1431610074.

The spelling of 127372221 in words is "one hundred twenty-seven million, three hundred seventy-two thousand, two hundred twenty-one".