212021120133 has 20 divisors (see below), whose sum is σ = 330493471968. Its totient is φ = 135201872520.

The previous prime is 212021120093. The next prime is 212021120249. The reversal of 212021120133 is 331021120212.

It is not a de Polignac number, because 212021120133 - 2⁹ = 212021119621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021100133) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56901283 + ... + 56905008.

Almost surely, 2^212021120133 is an apocalyptic number.

212021120133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

212021120133 is a deficient number, since it is larger than the sum of its proper divisors (118472351835).

212021120133 is a wasteful number, since it uses less digits than its factorization.

212021120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113806326 (or 113806317 counting only the distinct ones).

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

Adding to 212021120133 its reverse (331021120212), we get a palindrome (543042240345).

The spelling of 212021120133 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, one hundred thirty-three".