212021131131 has 48 divisors (see below), whose sum is σ = 325932984000. Its totient is φ = 132351442944.

The previous prime is 212021131033. The next prime is 212021131151. The reversal of 212021131131 is 131131120212.

It is not a de Polignac number, because 212021131131 - 2¹⁰ = 212021130107 is a prime.

It is a super-2 number, since 2×212021131131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212021131151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24657925 + ... + 24666521.

It is an arithmetic number, because the mean of its divisors is an integer number (6790270500).

Almost surely, 2^212021131131 is an apocalyptic number.

212021131131 is a deficient number, since it is larger than the sum of its proper divisors (113911852869).

212021131131 is a wasteful number, since it uses less digits than its factorization.

212021131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9428 (or 9425 counting only the distinct ones).

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

Adding to 212021131131 its reverse (131131120212), we get a palindrome (343152251343).

The spelling of 212021131131 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-one thousand, one hundred thirty-one".