133021113221 has 4 divisors (see below), whose sum is σ = 133022173152. Its totient is φ = 133020053292.

The previous prime is 133021113217. The next prime is 133021113241. The reversal of 133021113221 is 122311120331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133021113221 - 2² = 133021113217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133021113193 and 133021113202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133021113241) 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, 311771 + ... + 602696.

It is an arithmetic number, because the mean of its divisors is an integer number (33255543288).

Almost surely, 2^133021113221 is an apocalyptic number.

It is an amenable number.

133021113221 is a deficient number, since it is larger than the sum of its proper divisors (1059931).

133021113221 is an equidigital number, since it uses as much as digits as its factorization.

133021113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059930.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 133021113221 its reverse (122311120331), we get a palindrome (255332233552).

The spelling of 133021113221 in words is "one hundred thirty-three billion, twenty-one million, one hundred thirteen thousand, two hundred twenty-one".