21240502315202 has 32 divisors (see below), whose sum is σ = 32172226265088. Its totient is φ = 10516757516496.

The previous prime is 21240502315199. The next prime is 21240502315229. The reversal of 21240502315202 is 20251320504212.

It is a happy 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, 374273393 + ... + 374330139.

It is an arithmetic number, because the mean of its divisors is an integer number (1005382070784).

Almost surely, 2^{21240502315202} is an apocalyptic number.

21240502315202 is a deficient number, since it is larger than the sum of its proper divisors (10931723949886).

21240502315202 is a wasteful number, since it uses less digits than its factorization.

21240502315202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59630.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 21240502315202 its reverse (20251320504212), we get a palindrome (41491822819414).

The spelling of 21240502315202 in words is "twenty-one trillion, two hundred forty billion, five hundred two million, three hundred fifteen thousand, two hundred two".