1222078 has 16 divisors (see below), whose sum is σ = 2154096. Its totient is φ = 512640.

The previous prime is 1222063. The next prime is 1222097. The reversal of 1222078 is 8702221.

1222078 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851 + ... + 2422.

It is an arithmetic number, because the mean of its divisors is an integer number (134631).

2^1222078 is an apocalyptic number.

1222078 is a deficient number, since it is larger than the sum of its proper divisors (932018).

1222078 is a wasteful number, since it uses less digits than its factorization.

1222078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1222078 is about 1105.4763679066. The cubic root of 1222078 is about 106.9136054005.

Adding to 1222078 its reverse (8702221), we get a palindrome (9924299).

The spelling of 1222078 in words is "one million, two hundred twenty-two thousand, seventy-eight".