1222616404 has 12 divisors (see below), whose sum is σ = 2265436404. Its totient is φ = 575348864.

The previous prime is 1222616393. The next prime is 1222616429. The reversal of 1222616404 is 4046162221.

It can be written as a sum of positive squares in 2 ways, for example, as 1090320400 + 132296004 = 33020^2 + 11502^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8989759 + ... + 8989894.

It is an arithmetic number, because the mean of its divisors is an integer number (188786367).

Almost surely, 2^1222616404 is an apocalyptic number.

It is an amenable number.

1222616404 is a deficient number, since it is larger than the sum of its proper divisors (1042820000).

1222616404 is a wasteful number, since it uses less digits than its factorization.

1222616404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17979674 (or 17979672 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1222616404 is about 34965.9320482094. The cubic root of 1222616404 is about 1069.2930386973.

Adding to 1222616404 its reverse (4046162221), we get a palindrome (5268778625).

The spelling of 1222616404 in words is "one billion, two hundred twenty-two million, six hundred sixteen thousand, four hundred four".