1222087 has 6 divisors (see below), whose sum is σ = 1254344. Its totient is φ = 1190640.

The previous prime is 1222063. The next prime is 1222097. The reversal of 1222087 is 7802221.

It is not a de Polignac number, because 1222087 - 2⁷ = 1221959 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222027) 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 5 ways as a sum of consecutive naturals, for example, 1318 + ... + 2044.

2^1222087 is an apocalyptic number.

1222087 is a deficient number, since it is larger than the sum of its proper divisors (32257).

1222087 is an frugal number, since it uses more digits than its factorization.

1222087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 768 counting only the distinct ones).

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

The square root of 1222087 is about 1105.4804385424. The cubic root of 1222087 is about 106.9138678552.

It can be divided in two parts, 122 and 2087, that added together give a square (2209 = 47²).

The spelling of 1222087 in words is "one million, two hundred twenty-two thousand, eighty-seven".