1236042221604 has 48 divisors (see below), whose sum is σ = 2902171216896. Its totient is φ = 409436684800.

The previous prime is 1236042221569. The next prime is 1236042221629. The reversal of 1236042221604 is 4061222406321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1963294 + ... + 2515274.

It is an arithmetic number, because the mean of its divisors is an integer number (60461900352).

Almost surely, 2^{1236042221604} is an apocalyptic number.

It is an amenable number.

1236042221604 is an abundant number, since it is smaller than the sum of its proper divisors (1666128995292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1236042221604 is a wasteful number, since it uses less digits than its factorization.

1236042221604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553156 (or 553154 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 1236042221604 its reverse (4061222406321), we get a palindrome (5297264627925).

The spelling of 1236042221604 in words is "one trillion, two hundred thirty-six billion, forty-two million, two hundred twenty-one thousand, six hundred four".