133211212223 has 4 divisors (see below), whose sum is σ = 133214514768. Its totient is φ = 133207909680.

The previous prime is 133211212219. The next prime is 133211212231. The reversal of 133211212223 is 322212112331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133211212223 - 2² = 133211212219 is a prime.

It is a super-2 number, since 2×133211212223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133211212213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1590011 + ... + 1671692.

It is an arithmetic number, because the mean of its divisors is an integer number (33303628692).

Almost surely, 2^133211212223 is an apocalyptic number.

133211212223 is a deficient number, since it is larger than the sum of its proper divisors (3302545).

133211212223 is an equidigital number, since it uses as much as digits as its factorization.

133211212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302544.

The product of its digits is 864, while the sum is 23.

Adding to 133211212223 its reverse (322212112331), we get a palindrome (455423324554).

The spelling of 133211212223 in words is "one hundred thirty-three billion, two hundred eleven million, two hundred twelve thousand, two hundred twenty-three".