21130142324234 has 16 divisors (see below), whose sum is σ = 32553574778088. Its totient is φ = 10278981150912.

The previous prime is 21130142324201. The next prime is 21130142324293. The reversal of 21130142324234 is 43242324103112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20943299668225 + 186842656009 = 4576385^2 + 432253^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21130142324234.

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, 6204449 + ... + 8986404.

Almost surely, 2^{21130142324234} is an apocalyptic number.

21130142324234 is a deficient number, since it is larger than the sum of its proper divisors (11423432453854).

21130142324234 is a wasteful number, since it uses less digits than its factorization.

21130142324234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15209689.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21130142324234 its reverse (43242324103112), we get a palindrome (64372466427346).

The spelling of 21130142324234 in words is "twenty-one trillion, one hundred thirty billion, one hundred forty-two million, three hundred twenty-four thousand, two hundred thirty-four".