1222037890 has 16 divisors (see below), whose sum is σ = 2209277880. Its totient is φ = 486679680.

The previous prime is 1222037879. The next prime is 1222037891. The reversal of 1222037890 is 987302221.

It can be written as a sum of positive squares in 4 ways, for example, as 1214034649 + 8003241 = 34843^2 + 2829^2 .

It is not an unprimeable number, because it can be changed into a prime (1222037891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264531 + ... + 269110.

Almost surely, 2^1222037890 is an apocalyptic number.

1222037890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222037890 is a deficient number, since it is larger than the sum of its proper divisors (987239990).

1222037890 is a wasteful number, since it uses less digits than its factorization.

1222037890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533877.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1222037890 is about 34957.6585314291. The cubic root of 1222037890 is about 1069.1243571207.

The spelling of 1222037890 in words is "one billion, two hundred twenty-two million, thirty-seven thousand, eight hundred ninety".