1222407 has 12 divisors (see below), whose sum is σ = 1791504. Its totient is φ = 803040.

The previous prime is 1222393. The next prime is 1222409. The reversal of 1222407 is 7042221.

It is not a de Polignac number, because 1222407 - 2⁷ = 1222279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318 + ... + 1595.

It is an arithmetic number, because the mean of its divisors is an integer number (149292).

2^1222407 is an apocalyptic number.

1222407 is a deficient number, since it is larger than the sum of its proper divisors (569097).

1222407 is a wasteful number, since it uses less digits than its factorization.

1222407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 1222407 is about 1105.6251625212. The cubic root of 1222407 is about 106.9231987380.

Adding to 1222407 its reverse (7042221), we get a palindrome (8264628).

The spelling of 1222407 in words is "one million, two hundred twenty-two thousand, four hundred seven".