36221137 has 2 divisors, whose sum is σ = 36221138. Its totient is φ = 36221136.

The previous prime is 36221123. The next prime is 36221173. The reversal of 36221137 is 73112263.

Together with next prime (36221173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 9585216 = 5161^2 + 3096^2 .

It is a cyclic number.

It is not a de Polignac number, because 36221137 - 2¹⁹ = 35696849 is a prime.

It is not a weakly prime, because it can be changed into another prime (36231137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18110568 + 18110569.

It is an arithmetic number, because the mean of its divisors is an integer number (18110569).

Almost surely, 2^36221137 is an apocalyptic number.

It is an amenable number.

36221137 is a deficient number, since it is larger than the sum of its proper divisors (1).

36221137 is an equidigital number, since it uses as much as digits as its factorization.

36221137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 36221137 is about 6018.3998703974. The cubic root of 36221137 is about 330.8674362599.

The spelling of 36221137 in words is "thirty-six million, two hundred twenty-one thousand, one hundred thirty-seven".