1321222011110 has 32 divisors (see below), whose sum is σ = 2518927673472. Its totient is φ = 497236495360.

The previous prime is 1321222011079. The next prime is 1321222011113. The reversal of 1321222011110 is 111102221231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222011113) 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, 771551 + ... + 1799370.

It is an arithmetic number, because the mean of its divisors is an integer number (78716489796).

Almost surely, 2^{1321222011110} is an apocalyptic number.

1321222011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321222011110 is a deficient number, since it is larger than the sum of its proper divisors (1197705662362).

1321222011110 is a wasteful number, since it uses less digits than its factorization.

1321222011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573968.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1321222011110 its reverse (111102221231), we get a palindrome (1432324232341).

The spelling of 1321222011110 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-two million, eleven thousand, one hundred ten".