1235130221144 has 8 divisors (see below), whose sum is σ = 2315869164660. Its totient is φ = 617565110568.

The previous prime is 1235130221141. The next prime is 1235130221161. The reversal of 1235130221144 is 4411220315321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235130221141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77195638814 + ... + 77195638829.

Almost surely, 2^{1235130221144} is an apocalyptic number.

It is an amenable number.

1235130221144 is a deficient number, since it is larger than the sum of its proper divisors (1080738943516).

1235130221144 is a wasteful number, since it uses less digits than its factorization.

1235130221144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154391277649 (or 154391277645 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 1235130221144 its reverse (4411220315321), we get a palindrome (5646350536465).

The spelling of 1235130221144 in words is "one trillion, two hundred thirty-five billion, one hundred thirty million, two hundred twenty-one thousand, one hundred forty-four".