1321210004 has 24 divisors (see below), whose sum is σ = 2326128000. Its totient is φ = 656612640.

The previous prime is 1321210003. The next prime is 1321210021. The reversal of 1321210004 is 4000121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321210003) 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, 943697 + ... + 945095.

It is an arithmetic number, because the mean of its divisors is an integer number (96922000).

Almost surely, 2^1321210004 is an apocalyptic number.

It is an amenable number.

1321210004 is a deficient number, since it is larger than the sum of its proper divisors (1004917996).

1321210004 is a wasteful number, since it uses less digits than its factorization.

1321210004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1321210004 is about 36348.4525667875. The cubic root of 1321210004 is about 1097.2963918517.

Adding to 1321210004 its reverse (4000121231), we get a palindrome (5321331235).

The spelling of 1321210004 in words is "one billion, three hundred twenty-one million, two hundred ten thousand, four".