133223221021 has 16 divisors (see below), whose sum is σ = 146411435520. Its totient is φ = 120214885680.

The previous prime is 133223221013. The next prime is 133223221081. The reversal of 133223221021 is 120122322331.

It is a cyclic number.

It is not a de Polignac number, because 133223221021 - 2³ = 133223221013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133223220983 and 133223221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223221081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13308000 + ... + 13318006.

It is an arithmetic number, because the mean of its divisors is an integer number (9150714720).

Almost surely, 2^133223221021 is an apocalyptic number.

133223221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133223221021 is a deficient number, since it is larger than the sum of its proper divisors (13188214499).

133223221021 is a wasteful number, since it uses less digits than its factorization.

133223221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18864.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 133223221021 its reverse (120122322331), we get a palindrome (253345543352).

The spelling of 133223221021 in words is "one hundred thirty-three billion, two hundred twenty-three million, two hundred twenty-one thousand, twenty-one".