1222365 has 16 divisors (see below), whose sum is σ = 2059200. Its totient is φ = 617472.

The previous prime is 1222307. The next prime is 1222373. The reversal of 1222365 is 5632221.

It is not a de Polignac number, because 1222365 - 2⁹ = 1221853 is a prime.

It is an Ulam number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1860 + ... + 2429.

It is an arithmetic number, because the mean of its divisors is an integer number (128700).

2^1222365 is an apocalyptic number.

1222365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222365 is a deficient number, since it is larger than the sum of its proper divisors (836835).

1222365 is a wasteful number, since it uses less digits than its factorization.

1222365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4316.

The product of its digits is 720, while the sum is 21.

The square root of 1222365 is about 1105.6061685790. The cubic root of 1222365 is about 106.9219741525.

Adding to 1222365 its reverse (5632221), we get a palindrome (6854586).

The spelling of 1222365 in words is "one million, two hundred twenty-two thousand, three hundred sixty-five".