127222245 has 20 divisors (see below), whose sum is σ = 228058380. Its totient is φ = 67851648.

The previous prime is 127222241. The next prime is 127222247. The reversal of 127222245 is 542222721.

It can be written as a sum of positive squares in 2 ways, for example, as 97476129 + 29746116 = 9873^2 + 5454^2 .

It is not a de Polignac number, because 127222245 - 2² = 127222241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127222241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 156660 + ... + 157469.

It is an arithmetic number, because the mean of its divisors is an integer number (11402919).

Almost surely, 2^127222245 is an apocalyptic number.

127222245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127222245 is a deficient number, since it is larger than the sum of its proper divisors (100836135).

127222245 is an equidigital number, since it uses as much as digits as its factorization.

127222245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314146 (or 314137 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 127222245 is about 11279.2838868432. The cubic root of 127222245 is about 502.9456060660.

Adding to 127222245 its reverse (542222721), we get a palindrome (669444966).

The spelling of 127222245 in words is "one hundred twenty-seven million, two hundred twenty-two thousand, two hundred forty-five".