133123023221 has 8 divisors (see below), whose sum is σ = 133824446784. Its totient is φ = 132421720320.

The previous prime is 133123023199. The next prime is 133123023227. The reversal of 133123023221 is 122320321331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133123023221 is a prime.

It is a super-2 number, since 2×133123023221² (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 (133123023227) 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, 2955056 + ... + 2999766.

It is an arithmetic number, because the mean of its divisors is an integer number (16728055848).

Almost surely, 2^133123023221 is an apocalyptic number.

It is an amenable number.

133123023221 is a deficient number, since it is larger than the sum of its proper divisors (701423563).

133123023221 is a wasteful number, since it uses less digits than its factorization.

133123023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60331.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 133123023221 its reverse (122320321331), we get a palindrome (255443344552).

The spelling of 133123023221 in words is "one hundred thirty-three billion, one hundred twenty-three million, twenty-three thousand, two hundred twenty-one".