21212140000430 has 32 divisors (see below), whose sum is σ = 38336670338400. Its totient is φ = 8450456688000.

The previous prime is 21212140000421. The next prime is 21212140000517. The reversal of 21212140000430 is 3400004121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36247796 + ... + 36828344.

It is an arithmetic number, because the mean of its divisors is an integer number (1198020948075).

Almost surely, 2^{21212140000430} is an apocalyptic number.

21212140000430 is a deficient number, since it is larger than the sum of its proper divisors (17124530337970).

21212140000430 is a wasteful number, since it uses less digits than its factorization.

21212140000430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595364.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21212140000430 its reverse (3400004121212), we get a palindrome (24612144121642).

The spelling of 21212140000430 in words is "twenty-one trillion, two hundred twelve billion, one hundred forty million, four hundred thirty", and thus it is an aban number.