1222090 has 8 divisors (see below), whose sum is σ = 2199780. Its totient is φ = 488832.

The previous prime is 1222063. The next prime is 1222097. The reversal of 1222090 is 902221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1046529 + 175561 = 1023^2 + 419^2 .

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 (1222097) 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, 61095 + ... + 61114.

2^1222090 is an apocalyptic number.

1222090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222090 is a deficient number, since it is larger than the sum of its proper divisors (977690).

1222090 is a wasteful number, since it uses less digits than its factorization.

1222090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122216.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1222090 is about 1105.4817954177. The cubic root of 1222090 is about 106.9139553398.

The spelling of 1222090 in words is "one million, two hundred twenty-two thousand, ninety".