137216227 has 2 divisors, whose sum is σ = 137216228. Its totient is φ = 137216226.

The previous prime is 137216221. The next prime is 137216237. The reversal of 137216227 is 722612731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137216227 - 2¹¹ = 137214179 is a prime.

It is not a weakly prime, because it can be changed into another prime (137216221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68608113 + 68608114.

It is an arithmetic number, because the mean of its divisors is an integer number (68608114).

Almost surely, 2^137216227 is an apocalyptic number.

137216227 is a deficient number, since it is larger than the sum of its proper divisors (1).

137216227 is an equidigital number, since it uses as much as digits as its factorization.

137216227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 137216227 is about 11713.9330286629. The cubic root of 137216227 is about 515.7847426064.

Adding to 137216227 its reverse (722612731), we get a palindrome (859828958).

The spelling of 137216227 in words is "one hundred thirty-seven million, two hundred sixteen thousand, two hundred twenty-seven".