21404413102 has 16 divisors (see below), whose sum is σ = 34224249600. Its totient is φ = 10010590200.

The previous prime is 21404413073. The next prime is 21404413169. The reversal of 21404413102 is 20131440412.

It is a happy number.

It is a congruent number.

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, 3562024 + ... + 3568027.

It is an arithmetic number, because the mean of its divisors is an integer number (2139015600).

Almost surely, 2^21404413102 is an apocalyptic number.

21404413102 is a deficient number, since it is larger than the sum of its proper divisors (12819836498).

21404413102 is a wasteful number, since it uses less digits than its factorization.

21404413102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130151.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21404413102 its reverse (20131440412), we get a palindrome (41535853514).

The spelling of 21404413102 in words is "twenty-one billion, four hundred four million, four hundred thirteen thousand, one hundred two".