4221137 has 4 divisors (see below), whose sum is σ = 4229940. Its totient is φ = 4212336.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221137 is 7311224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2193361 + 2027776 = 1481^2 + 1424^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221137 - 2¹² = 4217041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638 + ... + 4655.

It is an arithmetic number, because the mean of its divisors is an integer number (1057485).

Almost surely, 2^4221137 is an apocalyptic number.

It is an amenable number.

4221137 is a deficient number, since it is larger than the sum of its proper divisors (8803).

4221137 is an equidigital number, since it uses as much as digits as its factorization.

4221137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8802.

The product of its digits is 336, while the sum is 20.

The square root of 4221137 is about 2054.5405812492. The cubic root of 4221137 is about 161.6130708842.

The spelling of 4221137 in words is "four million, two hundred twenty-one thousand, one hundred thirty-seven".