1222151 has 8 divisors (see below), whose sum is σ = 1457664. Its totient is φ = 1001880.

The previous prime is 1222129. The next prime is 1222157. The reversal of 1222151 is 1512221.

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

It is not a de Polignac number, because 1222151 - 2¹⁴ = 1205767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635 + ... + 3956.

It is an arithmetic number, because the mean of its divisors is an integer number (182208).

2^1222151 is an apocalyptic number.

1222151 is a deficient number, since it is larger than the sum of its proper divisors (235513).

1222151 is an equidigital number, since it uses as much as digits as its factorization.

1222151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7621.

The product of its digits is 40, while the sum is 14.

The square root of 1222151 is about 1105.5093848539. The cubic root of 1222151 is about 106.9157341620.

Adding to 1222151 its reverse (1512221), we get a palindrome (2734372).

The spelling of 1222151 in words is "one million, two hundred twenty-two thousand, one hundred fifty-one".