212143144242404 has 24 divisors (see below), whose sum is σ = 371896374023160. Its totient is φ = 105887039809536.

The previous prime is 212143144242391. The next prime is 212143144242461. The reversal of 212143144242404 is 404242441341212.

It can be written as a sum of positive squares in 4 ways, for example, as 62954068609600 + 149189075632804 = 7934360^2 + 12214298^2 .

It is a super-2 number, since 2×212143144242404² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664722182 + ... + 665041250.

It is an arithmetic number, because the mean of its divisors is an integer number (15495682250965).

Almost surely, 2^{212143144242404} is an apocalyptic number.

It is an amenable number.

212143144242404 is a deficient number, since it is larger than the sum of its proper divisors (159753229780756).

212143144242404 is a wasteful number, since it uses less digits than its factorization.

212143144242404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607727 (or 607725 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 38.

Adding to 212143144242404 its reverse (404242441341212), we get a palindrome (616385585583616).

The spelling of 212143144242404 in words is "two hundred twelve trillion, one hundred forty-three billion, one hundred forty-four million, two hundred forty-two thousand, four hundred four".