1201144432311 has 12 divisors (see below), whose sum is σ = 1735017600888. Its totient is φ = 800748555504.

The previous prime is 1201144432309. The next prime is 1201144432343. The reversal of 1201144432311 is 1132344411021.

It is a happy number.

1201144432311 is a `hidden beast` number, since 1 + 201 + 1 + 4 + 443 + 2 + 3 + 11 = 666.

It is not a de Polignac number, because 1201144432311 - 2¹ = 1201144432309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201144432351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 658800 + ... + 1684133.

It is an arithmetic number, because the mean of its divisors is an integer number (144584800074).

Almost surely, 2^{1201144432311} is an apocalyptic number.

1201144432311 is a deficient number, since it is larger than the sum of its proper divisors (533873168577).

1201144432311 is a wasteful number, since it uses less digits than its factorization.

1201144432311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399902 (or 2399899 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1201144432311 its reverse (1132344411021), we get a palindrome (2333488843332).

The spelling of 1201144432311 in words is "one trillion, two hundred one billion, one hundred forty-four million, four hundred thirty-two thousand, three hundred eleven".