21234354130 has 96 divisors (see below), whose sum is σ = 42664527360. Its totient is φ = 7602672000.

The previous prime is 21234354121. The next prime is 21234354149. The reversal of 21234354130 is 3145343212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29207827 + ... + 29208553.

It is an arithmetic number, because the mean of its divisors is an integer number (444422160).

Almost surely, 2^21234354130 is an apocalyptic number.

21234354130 is an abundant number, since it is smaller than the sum of its proper divisors (21430173230).

21234354130 is a wasteful number, since it uses less digits than its factorization.

21234354130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21234354130 its reverse (3145343212), we get a palindrome (24379697342).

The spelling of 21234354130 in words is "twenty-one billion, two hundred thirty-four million, three hundred fifty-four thousand, one hundred thirty".