1321234340210 has 32 divisors (see below), whose sum is σ = 2441880048384. Its totient is φ = 514407280000.

The previous prime is 1321234340147. The next prime is 1321234340219. The reversal of 1321234340210 is 120434321231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321234340210.

It is not an unprimeable number, because it can be changed into a prime (1321234340219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3561716 + ... + 3915135.

It is an arithmetic number, because the mean of its divisors is an integer number (76308751512).

Almost surely, 2^{1321234340210} is an apocalyptic number.

1321234340210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321234340210 is a deficient number, since it is larger than the sum of its proper divisors (1120645708174).

1321234340210 is a wasteful number, since it uses less digits than its factorization.

1321234340210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7477330.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1321234340210 its reverse (120434321231), we get a palindrome (1441668661441).

The spelling of 1321234340210 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-four million, three hundred forty thousand, two hundred ten".