1321251430010 has 32 divisors (see below), whose sum is σ = 2382165780480. Its totient is φ = 527631511168.

The previous prime is 1321251429983. The next prime is 1321251430067. The reversal of 1321251430010 is 100341521231.

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, 20540759 + ... + 20604981.

It is an arithmetic number, because the mean of its divisors is an integer number (74442680640).

Almost surely, 2^{1321251430010} is an apocalyptic number.

1321251430010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321251430010 is a deficient number, since it is larger than the sum of its proper divisors (1060914350470).

1321251430010 is a wasteful number, since it uses less digits than its factorization.

1321251430010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67582.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 1321251430010 its reverse (100341521231), we get a palindrome (1421592951241).

The spelling of 1321251430010 in words is "one trillion, three hundred twenty-one billion, two hundred fifty-one million, four hundred thirty thousand, ten".