133212210021 has 12 divisors (see below), whose sum is σ = 209910149280. Its totient is φ = 80734672680.

The previous prime is 133212210017. The next prime is 133212210029. The reversal of 133212210021 is 120012212331.

It is not a de Polignac number, because 133212210021 - 2² = 133212210017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133212209976 and 133212210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133212210029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672788841 + ... + 672789038.

It is an arithmetic number, because the mean of its divisors is an integer number (17492512440).

Almost surely, 2^133212210021 is an apocalyptic number.

133212210021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133212210021 is a deficient number, since it is larger than the sum of its proper divisors (76697939259).

133212210021 is a wasteful number, since it uses less digits than its factorization.

133212210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345577896 (or 1345577893 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 133212210021 its reverse (120012212331), we get a palindrome (253224422352).

The spelling of 133212210021 in words is "one hundred thirty-three billion, two hundred twelve million, two hundred ten thousand, twenty-one".