212115145243130 has 32 divisors (see below), whose sum is σ = 404403413342544. Its totient is φ = 79828071284736.

The previous prime is 212115145243129. The next prime is 212115145243139. The reversal of 212115145243130 is 31342541511212.

It can be written as a sum of positive squares in 8 ways, for example, as 192655815762601 + 19459329480529 = 13880051^2 + 4411273^2 .

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 15 ways as a sum of consecutive naturals, for example, 210763847 + ... + 211767866.

Almost surely, 2^{212115145243130} is an apocalyptic number.

212115145243130 is a deficient number, since it is larger than the sum of its proper divisors (192288268099414).

212115145243130 is a wasteful number, since it uses less digits than its factorization.

212115145243130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422534690.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 212115145243130 its reverse (31342541511212), we get a palindrome (243457686754342).

The spelling of 212115145243130 in words is "two hundred twelve trillion, one hundred fifteen billion, one hundred forty-five million, two hundred forty-three thousand, one hundred thirty".