1245321321152 has 28 divisors (see below), whose sum is σ = 2471221107840. Its totient is φ = 622651435776.

The previous prime is 1245321321091. The next prime is 1245321321193. The reversal of 1245321321152 is 2511231235421.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 6811478 + ... + 6991914.

Almost surely, 2^{1245321321152} is an apocalyptic number.

It is an amenable number.

1245321321152 is a deficient number, since it is larger than the sum of its proper divisors (1225899786688).

1245321321152 is a wasteful number, since it uses less digits than its factorization.

1245321321152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288288 (or 288278 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

Adding to 1245321321152 its reverse (2511231235421), we get a palindrome (3756552556573).

The spelling of 1245321321152 in words is "one trillion, two hundred forty-five billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred fifty-two".