133211121021 has 80 divisors (see below), whose sum is σ = 225180922560. Its totient is φ = 77774618880.

The previous prime is 133211120993. The next prime is 133211121023. The reversal of 133211121021 is 120121112331.

It is not a de Polignac number, because 133211121021 - 2¹³ = 133211112829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133211120985 and 133211121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133211121023) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2773035 + ... + 2820663.

It is an arithmetic number, because the mean of its divisors is an integer number (2814761532).

Almost surely, 2^133211121021 is an apocalyptic number.

133211121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133211121021 is a deficient number, since it is larger than the sum of its proper divisors (91969801539).

133211121021 is a wasteful number, since it uses less digits than its factorization.

133211121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47768 (or 47759 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 133211121021 its reverse (120121112331), we get a palindrome (253332233352).

The spelling of 133211121021 in words is "one hundred thirty-three billion, two hundred eleven million, one hundred twenty-one thousand, twenty-one".