133221132121 has 8 divisors (see below), whose sum is σ = 166093879104. Its totient is φ = 103808674320.

The previous prime is 133221132097. The next prime is 133221132139. The reversal of 133221132121 is 121231122331.

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-133221132121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133221132092 and 133221132101.

It is not an unprimeable number, because it can be changed into a prime (133221135121) 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, 865072210 + ... + 865072363.

It is an arithmetic number, because the mean of its divisors is an integer number (20761734888).

Almost surely, 2^133221132121 is an apocalyptic number.

133221132121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133221132121 is a deficient number, since it is larger than the sum of its proper divisors (32872746983).

133221132121 is a wasteful number, since it uses less digits than its factorization.

133221132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730144591.

The product of its digits is 432, while the sum is 22.

Adding to 133221132121 its reverse (121231122331), we get a palindrome (254452254452).

The spelling of 133221132121 in words is "one hundred thirty-three billion, two hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-one".