1222041591 has 12 divisors (see below), whose sum is σ = 1774925880. Its totient is φ = 810192240.

The previous prime is 1222041559. The next prime is 1222041593. The reversal of 1222041591 is 1951402221.

1222041591 is a `hidden beast` number, since 12 + 2 + 20 + 41 + 591 = 666.

It is not a de Polignac number, because 1222041591 - 2⁵ = 1222041559 is a prime.

It is a super-2 number, since 2×1222041591² = 2986771300267622562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222041593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373461 + ... + 376718.

It is an arithmetic number, because the mean of its divisors is an integer number (147910490).

Almost surely, 2^1222041591 is an apocalyptic number.

1222041591 is a deficient number, since it is larger than the sum of its proper divisors (552884289).

1222041591 is a wasteful number, since it uses less digits than its factorization.

1222041591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750366 (or 750363 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1222041591 is about 34957.7114668566. The cubic root of 1222041591 is about 1069.1254364176.

The spelling of 1222041591 in words is "one billion, two hundred twenty-two million, forty-one thousand, five hundred ninety-one".