1201231313012 has 12 divisors (see below), whose sum is σ = 2102855303556. Its totient is φ = 600415512000.

The previous prime is 1201231312979. The next prime is 1201231313071. The reversal of 1201231313012 is 2103131321021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 897934388836 + 303296924176 = 947594^2 + 550724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50022623 + ... + 50046630.

It is an arithmetic number, because the mean of its divisors is an integer number (175237941963).

Almost surely, 2^{1201231313012} is an apocalyptic number.

It is an amenable number.

1201231313012 is a deficient number, since it is larger than the sum of its proper divisors (901623990544).

1201231313012 is a wasteful number, since it uses less digits than its factorization.

1201231313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100072258 (or 100072256 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1201231313012 its reverse (2103131321021), we get a palindrome (3304362634033).

The spelling of 1201231313012 in words is "one trillion, two hundred one billion, two hundred thirty-one million, three hundred thirteen thousand, twelve".