133121223211 has 6 divisors (see below), whose sum is σ = 140496360612. Its totient is φ = 126114842700.

The previous prime is 133121223163. The next prime is 133121223241. The reversal of 133121223211 is 112322121331.

It is a de Polignac number, because none of the positive numbers 2^k-133121223211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133121223241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184378065 + ... + 184378786.

It is an arithmetic number, because the mean of its divisors is an integer number (23416060102).

Almost surely, 2^133121223211 is an apocalyptic number.

133121223211 is a deficient number, since it is larger than the sum of its proper divisors (7375137401).

133121223211 is an equidigital number, since it uses as much as digits as its factorization.

133121223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368756889 (or 368756870 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 133121223211 its reverse (112322121331), we get a palindrome (245443344542).

The spelling of 133121223211 in words is "one hundred thirty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred eleven".