1321144401210 has 96 divisors (see below), whose sum is σ = 3287133263232. Its totient is φ = 339816933120.

The previous prime is 1321144401193. The next prime is 1321144401223. The reversal of 1321144401210 is 121044411231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25734187 + ... + 25785473.

It is an arithmetic number, because the mean of its divisors is an integer number (34240971492).

Almost surely, 2^{1321144401210} is an apocalyptic number.

1321144401210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321144401210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1643566631616).

1321144401210 is an abundant number, since it is smaller than the sum of its proper divisors (1965988862022).

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

1321144401210 is a wasteful number, since it uses less digits than its factorization.

1321144401210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52376 (or 52347 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 1321144401210 its reverse (121044411231), we get a palindrome (1442188812441).

The spelling of 1321144401210 in words is "one trillion, three hundred twenty-one billion, one hundred forty-four million, four hundred one thousand, two hundred ten".