21412024402 has 4 divisors (see below), whose sum is σ = 32118036606. Its totient is φ = 10706012200.

The previous prime is 21412024349. The next prime is 21412024421. The reversal of 21412024402 is 20442021412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19331843521 + 2080180881 = 139039^2 + 45609^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5353006099 + ... + 5353006102.

Almost surely, 2^21412024402 is an apocalyptic number.

21412024402 is a deficient number, since it is larger than the sum of its proper divisors (10706012204).

21412024402 is a wasteful number, since it uses less digits than its factorization.

21412024402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10706012203.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21412024402 its reverse (20442021412), we get a palindrome (41854045814).

The spelling of 21412024402 in words is "twenty-one billion, four hundred twelve million, twenty-four thousand, four hundred two".