1201211212068 has 54 divisors (see below), whose sum is σ = 3532132974006. Its totient is φ = 343203202944.

The previous prime is 1201211212067. The next prime is 1201211212111. The reversal of 1201211212068 is 8602121121021.

It can be written as a sum of positive squares in only one way, i.e., 1115858420964 + 85352791104 = 1056342^2 + 292152^2 .

It is not an unprimeable number, because it can be changed into a prime (1201211212067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 340477605 + ... + 340481132.

It is an arithmetic number, because the mean of its divisors is an integer number (65409869889).

Almost surely, 2^{1201211212068} is an apocalyptic number.

1201211212068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1201211212068 is an abundant number, since it is smaller than the sum of its proper divisors (2330921761938).

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

1201211212068 is a wasteful number, since it uses less digits than its factorization.

1201211212068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680958761 (or 680958749 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

Adding to 1201211212068 its reverse (8602121121021), we get a palindrome (9803332333089).

The spelling of 1201211212068 in words is "one trillion, two hundred one billion, two hundred eleven million, two hundred twelve thousand, sixty-eight".