1213201 has 4 divisors (see below), whose sum is σ = 1323504. Its totient is φ = 1102900.

The previous prime is 1213189. The next prime is 1213213. The reversal of 1213201 is 1023121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1213189) and next prime (1213213).

It is a cyclic number.

It is not a de Polignac number, because 1213201 - 2¹⁷ = 1082129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55135 + ... + 55156.

It is an arithmetic number, because the mean of its divisors is an integer number (330876).

2^1213201 is an apocalyptic number.

1213201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213201 is a deficient number, since it is larger than the sum of its proper divisors (110303).

1213201 is a wasteful number, since it uses less digits than its factorization.

1213201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110302.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1213201 is about 1101.4540389866. The cubic root of 1213201 is about 106.6541076793.

Adding to 1213201 its reverse (1023121), we get a palindrome (2236322).

The spelling of 1213201 in words is "one million, two hundred thirteen thousand, two hundred one".