1201213323311 has 8 divisors (see below), whose sum is σ = 1243923690624. Its totient is φ = 1158750552960.

The previous prime is 1201213323239. The next prime is 1201213323319. The reversal of 1201213323311 is 1133233121021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201213323311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201213323319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61889366 + ... + 61908771.

It is an arithmetic number, because the mean of its divisors is an integer number (155490461328).

Almost surely, 2^{1201213323311} is an apocalyptic number.

1201213323311 is a deficient number, since it is larger than the sum of its proper divisors (42710367313).

1201213323311 is a wasteful number, since it uses less digits than its factorization.

1201213323311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123798481.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1201213323311 its reverse (1133233121021), we get a palindrome (2334446444332).

The spelling of 1201213323311 in words is "one trillion, two hundred one billion, two hundred thirteen million, three hundred twenty-three thousand, three hundred eleven".