1321131012010 has 64 divisors (see below), whose sum is σ = 2441241815040. Its totient is φ = 514463201280.

The previous prime is 1321131011999. The next prime is 1321131012011. The reversal of 1321131012010 is 102101311231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1321131012011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 598608327 + ... + 598610533.

It is an arithmetic number, because the mean of its divisors is an integer number (38144403360).

Almost surely, 2^{1321131012010} is an apocalyptic number.

1321131012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321131012010 is a deficient number, since it is larger than the sum of its proper divisors (1120110803030).

1321131012010 is a wasteful number, since it uses less digits than its factorization.

1321131012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1321131012010 its reverse (102101311231), we get a palindrome (1423232323241).

The spelling of 1321131012010 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-one million, twelve thousand, ten".