1222251 has 16 divisors (see below), whose sum is σ = 1760640. Its totient is φ = 751680.

The previous prime is 1222241. The next prime is 1222253. The reversal of 1222251 is 1522221.

It is not a de Polignac number, because 1222251 - 2⁵ = 1222219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222251.

It is not an unprimeable number, because it can be changed into a prime (1222253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076 + ... + 2598.

It is an arithmetic number, because the mean of its divisors is an integer number (110040).

2^1222251 is an apocalyptic number.

1222251 is a deficient number, since it is larger than the sum of its proper divisors (538389).

1222251 is a wasteful number, since it uses less digits than its factorization.

1222251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586.

The product of its digits is 80, while the sum is 15.

The square root of 1222251 is about 1105.5546119482. The cubic root of 1222251 is about 106.9186501361.

Adding to 1222251 its sum of digits (15), we get a triangular number (1222266 = T₁₅₆₃).

Adding to 1222251 its reverse (1522221), we get a palindrome (2744472).

The spelling of 1222251 in words is "one million, two hundred twenty-two thousand, two hundred fifty-one".