212021131133 has 4 divisors (see below), whose sum is σ = 242309864160. Its totient is φ = 181732398108.

The previous prime is 212021131033. The next prime is 212021131151. The reversal of 212021131133 is 331131120212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212021131133 - 2¹⁰ = 212021130109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021131163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15144366503 + ... + 15144366516.

It is an arithmetic number, because the mean of its divisors is an integer number (60577466040).

Almost surely, 2^212021131133 is an apocalyptic number.

It is an amenable number.

212021131133 is a deficient number, since it is larger than the sum of its proper divisors (30288733027).

212021131133 is an equidigital number, since it uses as much as digits as its factorization.

212021131133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30288733026.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 212021131133 its reverse (331131120212), we get a palindrome (543152251345).

The spelling of 212021131133 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, one hundred thirty-three".