212021131331 has 16 divisors (see below), whose sum is σ = 216128908800. Its totient is φ = 207950247648.

The previous prime is 212021131327. The next prime is 212021131373. The reversal of 212021131331 is 133131120212.

It is a happy number.

212021131331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212021131331 - 2² = 212021131327 is a prime.

It is a super-3 number, since 3×212021131331³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021131381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48660005 + ... + 48664361.

It is an arithmetic number, because the mean of its divisors is an integer number (13508056800).

Almost surely, 2^212021131331 is an apocalyptic number.

212021131331 is a deficient number, since it is larger than the sum of its proper divisors (4107777469).

212021131331 is a wasteful number, since it uses less digits than its factorization.

212021131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8378.

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

Adding to 212021131331 its reverse (133131120212), we get a palindrome (345152251543).

The spelling of 212021131331 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, three hundred thirty-one".