1222147461 has 8 divisors (see below), whose sum is σ = 1630111744. Its totient is φ = 814474080.

The previous prime is 1222147457. The next prime is 1222147463. The reversal of 1222147461 is 1647412221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222147461 - 2² = 1222147457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222147463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62725 + ... + 79866.

It is an arithmetic number, because the mean of its divisors is an integer number (203763968).

Almost surely, 2^1222147461 is an apocalyptic number.

It is an amenable number.

1222147461 is a deficient number, since it is larger than the sum of its proper divisors (407964283).

1222147461 is a wasteful number, since it uses less digits than its factorization.

1222147461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145451.

The product of its digits is 5376, while the sum is 30.

The square root of 1222147461 is about 34959.2256922261. The cubic root of 1222147461 is about 1069.1563096280.

Adding to 1222147461 its reverse (1647412221), we get a palindrome (2869559682).

The spelling of 1222147461 in words is "one billion, two hundred twenty-two million, one hundred forty-seven thousand, four hundred sixty-one".