1321210112010 has 16 divisors (see below), whose sum is σ = 3170904268896. Its totient is φ = 352322696528.

The previous prime is 1321210112003. The next prime is 1321210112029. The reversal of 1321210112010 is 102110121231.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22020168504 + ... + 22020168563.

It is an arithmetic number, because the mean of its divisors is an integer number (198181516806).

Almost surely, 2^{1321210112010} is an apocalyptic number.

1321210112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321210112010 is an abundant number, since it is smaller than the sum of its proper divisors (1849694156886).

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

1321210112010 is a wasteful number, since it uses less digits than its factorization.

1321210112010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44040337077.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1321210112010 its reverse (102110121231), we get a palindrome (1423320233241).

The spelling of 1321210112010 in words is "one trillion, three hundred twenty-one billion, two hundred ten million, one hundred twelve thousand, ten".