1201001123311 has 8 divisors (see below), whose sum is σ = 1311927637248. Its totient is φ = 1090365375000.

The previous prime is 1201001123281. The next prime is 1201001123323. The reversal of 1201001123311 is 1133211001021.

It is a happy number.

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

It is not a de Polignac number, because 1201001123311 - 2¹⁵ = 1201001090543 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 (1201001163311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72682765 + ... + 72699286.

It is an arithmetic number, because the mean of its divisors is an integer number (163990954656).

Almost surely, 2^{1201001123311} is an apocalyptic number.

1201001123311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201001123311 is a deficient number, since it is larger than the sum of its proper divisors (110926513937).

1201001123311 is a wasteful number, since it uses less digits than its factorization.

1201001123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145382813.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1201001123311 its reverse (1133211001021), we get a palindrome (2334212124332).

The spelling of 1201001123311 in words is "one trillion, two hundred one billion, one million, one hundred twenty-three thousand, three hundred eleven".