311112231221001 has 8 divisors (see below), whose sum is σ = 474075780908224. Its totient is φ = 177778417840560.

The previous prime is 311112231220913. The next prime is 311112231221039. The reversal of 311112231221001 is 100122132211113.

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

It is not a de Polignac number, because 311112231221001 - 2²¹ = 311112229123849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 14814868153381 = 311112231221001 / (3 + 1 + 1 + 1 + 1 + 2 + 2 + 3 + 1 + 2 + 2 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311112231201001) 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, 7407434076670 + ... + 7407434076711.

It is an arithmetic number, because the mean of its divisors is an integer number (59259472613528).

Almost surely, 2^{311112231221001} is an apocalyptic number.

It is an amenable number.

311112231221001 is a deficient number, since it is larger than the sum of its proper divisors (162963549687223).

311112231221001 is a wasteful number, since it uses less digits than its factorization.

311112231221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14814868153391.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 311112231221001 its reverse (100122132211113), we get a palindrome (411234363432114).

The spelling of 311112231221001 in words is "three hundred eleven trillion, one hundred twelve billion, two hundred thirty-one million, two hundred twenty-one thousand, one".