1201101321312 has 72 divisors (see below), whose sum is σ = 3415737727584. Its totient is φ = 400354700544.

The previous prime is 1201101321307. The next prime is 1201101321359. The reversal of 1201101321312 is 2131231011021.

1201101321312 is a `hidden beast` number, since 1 + 20 + 1 + 10 + 1 + 321 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17932878 + ... + 17999730.

It is an arithmetic number, because the mean of its divisors is an integer number (47440801772).

Almost surely, 2^{1201101321312} is an apocalyptic number.

1201101321312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201101321312 is an abundant number, since it is smaller than the sum of its proper divisors (2214636406272).

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

1201101321312 is a wasteful number, since it uses less digits than its factorization.

1201101321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129252 (or 129241 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1201101321312 its reverse (2131231011021), we get a palindrome (3332332332333).

The spelling of 1201101321312 in words is "one trillion, two hundred one billion, one hundred one million, three hundred twenty-one thousand, three hundred twelve".