1221242311334 has 16 divisors (see below), whose sum is σ = 1862954726400. Its totient is φ = 600257877384.

The previous prime is 1221242311301. The next prime is 1221242311411. The reversal of 1221242311334 is 4331132421221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1221242311297 and 1221242311306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6702059 + ... + 6881865.

It is an arithmetic number, because the mean of its divisors is an integer number (116434670400).

Almost surely, 2^{1221242311334} is an apocalyptic number.

1221242311334 is a deficient number, since it is larger than the sum of its proper divisors (641712415066).

1221242311334 is a wasteful number, since it uses less digits than its factorization.

1221242311334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237427.

The product of its digits is 6912, while the sum is 29.

Adding to 1221242311334 its reverse (4331132421221), we get a palindrome (5552374732555).

The spelling of 1221242311334 in words is "one trillion, two hundred twenty-one billion, two hundred forty-two million, three hundred eleven thousand, three hundred thirty-four".