1222154 has 8 divisors (see below), whose sum is σ = 1850688. Its totient is φ = 605260.

The previous prime is 1222129. The next prime is 1222157. The reversal of 1222154 is 4512221.

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

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 3 ways as a sum of consecutive naturals, for example, 2642 + ... + 3069.

It is an arithmetic number, because the mean of its divisors is an integer number (231336).

2^1222154 is an apocalyptic number.

1222154 is a deficient number, since it is larger than the sum of its proper divisors (628534).

1222154 is a wasteful number, since it uses less digits than its factorization.

1222154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820.

The product of its digits is 160, while the sum is 17.

The square root of 1222154 is about 1105.5107416936. The cubic root of 1222154 is about 106.9158216436.

Adding to 1222154 its reverse (4512221), we get a palindrome (5734375).

The spelling of 1222154 in words is "one million, two hundred twenty-two thousand, one hundred fifty-four".