133221012231 has 8 divisors (see below), whose sum is σ = 177698485744. Its totient is φ = 88778773440.

The previous prime is 133221012191. The next prime is 133221012247. The reversal of 133221012231 is 132210122331.

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

It is not a de Polignac number, because 133221012231 - 2⁹ = 133221011719 is a prime.

It is a super-2 number, since 2×133221012231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133221012198 and 133221012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133221012131) 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, 8799856 + ... + 8814981.

It is an arithmetic number, because the mean of its divisors is an integer number (22212310718).

Almost surely, 2^133221012231 is an apocalyptic number.

133221012231 is a deficient number, since it is larger than the sum of its proper divisors (44477473513).

133221012231 is a wasteful number, since it uses less digits than its factorization.

133221012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17617361.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 133221012231 its reverse (132210122331), we get a palindrome (265431134562).

The spelling of 133221012231 in words is "one hundred thirty-three billion, two hundred twenty-one million, twelve thousand, two hundred thirty-one".