1222600561 has 16 divisors (see below), whose sum is σ = 1508752000. Its totient is φ = 964752768.

The previous prime is 1222600559. The next prime is 1222600567. The reversal of 1222600561 is 1650062221.

It is not a de Polignac number, because 1222600561 - 2¹ = 1222600559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222600567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16765 + ... + 52213.

It is an arithmetic number, because the mean of its divisors is an integer number (94297000).

Almost surely, 2^1222600561 is an apocalyptic number.

It is an amenable number.

1222600561 is a deficient number, since it is larger than the sum of its proper divisors (286151439).

1222600561 is a wasteful number, since it uses less digits than its factorization.

1222600561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35848.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1222600561 is about 34965.7054983880. The cubic root of 1222600561 is about 1069.2884199462.

Adding to 1222600561 its reverse (1650062221), we get a palindrome (2872662782).

The spelling of 1222600561 in words is "one billion, two hundred twenty-two million, six hundred thousand, five hundred sixty-one".