1222727546 has 4 divisors (see below), whose sum is σ = 1834091322. Its totient is φ = 611363772.

The previous prime is 1222727521. The next prime is 1222727549. The reversal of 1222727546 is 6457272221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 860776921 + 361950625 = 29339^2 + 19025^2 .

It is a super-3 number, since 3×1222727546³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222727549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305681885 + ... + 305681888.

Almost surely, 2^1222727546 is an apocalyptic number.

1222727546 is a deficient number, since it is larger than the sum of its proper divisors (611363776).

1222727546 is an equidigital number, since it uses as much as digits as its factorization.

1222727546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611363775.

The product of its digits is 94080, while the sum is 38.

The square root of 1222727546 is about 34967.5213019167. The cubic root of 1222727546 is about 1069.3254390930.

Adding to 1222727546 its reverse (6457272221), we get a palindrome (7679999767).

The spelling of 1222727546 in words is "one billion, two hundred twenty-two million, seven hundred twenty-seven thousand, five hundred forty-six".