212021012133 has 32 divisors (see below), whose sum is σ = 361126993920. Its totient is φ = 120429367920.

The previous prime is 212021012089. The next prime is 212021012153. The reversal of 212021012133 is 331210120212.

It is not a de Polignac number, because 212021012133 - 2¹⁰ = 212021011109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021012153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3327133 + ... + 3390258.

It is an arithmetic number, because the mean of its divisors is an integer number (11285218560).

Almost surely, 2^212021012133 is an apocalyptic number.

It is an amenable number.

212021012133 is a deficient number, since it is larger than the sum of its proper divisors (149105981787).

212021012133 is a wasteful number, since it uses less digits than its factorization.

212021012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6717574 (or 6717568 counting only the distinct ones).

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

Adding to 212021012133 its reverse (331210120212), we get a palindrome (543231132345).

The spelling of 212021012133 in words is "two hundred twelve billion, twenty-one million, twelve thousand, one hundred thirty-three".