1211320022311 has 8 divisors (see below), whose sum is σ = 1416560292224. Its totient is φ = 1014128390520.

The previous prime is 1211320022309. The next prime is 1211320022327. The reversal of 1211320022311 is 1132200231121.

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

It is not a de Polignac number, because 1211320022311 - 2¹ = 1211320022309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211320022111) 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 7 ways as a sum of consecutive naturals, for example, 2012159205 + ... + 2012159806.

It is an arithmetic number, because the mean of its divisors is an integer number (177070036528).

Almost surely, 2^{1211320022311} is an apocalyptic number.

1211320022311 is a deficient number, since it is larger than the sum of its proper divisors (205240269913).

1211320022311 is an equidigital number, since it uses as much as digits as its factorization.

1211320022311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4024319061.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1211320022311 its reverse (1132200231121), we get a palindrome (2343520253432).

The spelling of 1211320022311 in words is "one trillion, two hundred eleven billion, three hundred twenty million, twenty-two thousand, three hundred eleven".