212115145243131 has 24 divisors (see below), whose sum is σ = 340600663335296. Its totient is φ = 126321674584320.

The previous prime is 212115145243129. The next prime is 212115145243139. The reversal of 212115145243131 is 131342541511212.

212115145243131 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 1 + 514 + 5 + 2 + 4 + 3 + 131 = 666.

It is not a de Polignac number, because 212115145243131 - 2¹ = 212115145243129 is a prime.

It is a super-2 number, since 2×212115145243131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212115145243139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29241124750 + ... + 29241132003.

Almost surely, 2^{212115145243131} is an apocalyptic number.

212115145243131 is a deficient number, since it is larger than the sum of its proper divisors (128485518092165).

212115145243131 is a wasteful number, since it uses less digits than its factorization.

212115145243131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58482256803 (or 58482256800 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

Adding to 212115145243131 its reverse (131342541511212), we get a palindrome (343457686754343).

The spelling of 212115145243131 in words is "two hundred twelve trillion, one hundred fifteen billion, one hundred forty-five million, two hundred forty-three thousand, one hundred thirty-one".