1234221221142 has 96 divisors (see below), whose sum is σ = 3293104127040. Its totient is φ = 325326170880.

The previous prime is 1234221221071. The next prime is 1234221221143. The reversal of 1234221221142 is 2411221224321.

1234221221142 is a `hidden beast` number, since 1 + 2 + 3 + 422 + 1 + 221 + 14 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234221221143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2719792 + ... + 3140972.

It is an arithmetic number, because the mean of its divisors is an integer number (34303167990).

Almost surely, 2^{1234221221142} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234221221142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646552063520).

1234221221142 is an abundant number, since it is smaller than the sum of its proper divisors (2058882905898).

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

1234221221142 is a wasteful number, since it uses less digits than its factorization.

1234221221142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422998 (or 422995 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 1234221221142 its reverse (2411221224321), we get a palindrome (3645442445463).

The spelling of 1234221221142 in words is "one trillion, two hundred thirty-four billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred forty-two".