1225213 has 8 divisors (see below), whose sum is σ = 1380096. Its totient is φ = 1077600.

The previous prime is 1225183. The next prime is 1225219. The reversal of 1225213 is 3125221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225213 - 2⁹ = 1224701 is a prime.

It is a super-2 number, since 2×1225213² = 3002293790738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (172512).

2^1225213 is an apocalyptic number.

It is an amenable number.

1225213 is a deficient number, since it is larger than the sum of its proper divisors (154883).

1225213 is a wasteful number, since it uses less digits than its factorization.

1225213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3635.

The product of its digits is 120, while the sum is 16.

The square root of 1225213 is about 1106.8934004682. The cubic root of 1225213 is about 107.0049492572.

It can be divided in two parts, 122 and 5213, that added together give a palindrome (5335).

The spelling of 1225213 in words is "one million, two hundred twenty-five thousand, two hundred thirteen".