21334430402430 has 32 divisors (see below), whose sum is σ = 51204102057504. Its totient is φ = 5689018208256.

The previous prime is 21334430402429. The next prime is 21334430402459. The reversal of 21334430402430 is 3420403443312.

It is a happy number.

It is a super-2 number, since 2×21334430402430² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21334430402391 and 21334430402400.

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, 9137179 + ... + 11231958.

It is an arithmetic number, because the mean of its divisors is an integer number (1600128189297).

Almost surely, 2^{21334430402430} is an apocalyptic number.

21334430402430 is an abundant number, since it is smaller than the sum of its proper divisors (29869671655074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21334430402430 is a wasteful number, since it uses less digits than its factorization.

21334430402430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20404060.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 21334430402430 its reverse (3420403443312), we get a palindrome (24754833845742).

The spelling of 21334430402430 in words is "twenty-one trillion, three hundred thirty-four billion, four hundred thirty million, four hundred two thousand, four hundred thirty".