133221120023 has 4 divisors (see below), whose sum is σ = 134103379248. Its totient is φ = 132338860800.

The previous prime is 133221120017. The next prime is 133221120031. The reversal of 133221120023 is 320021122331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133221120023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133221119977 and 133221120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133221120523) 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, 441129386 + ... + 441129687.

It is an arithmetic number, because the mean of its divisors is an integer number (33525844812).

Almost surely, 2^133221120023 is an apocalyptic number.

133221120023 is a deficient number, since it is larger than the sum of its proper divisors (882259225).

133221120023 is an equidigital number, since it uses as much as digits as its factorization.

133221120023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882259224.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 133221120023 its reverse (320021122331), we get a palindrome (453242242354).

The spelling of 133221120023 in words is "one hundred thirty-three billion, two hundred twenty-one million, one hundred twenty thousand, twenty-three".