21412420522 has 8 divisors (see below), whose sum is σ = 32598013536. Its totient is φ = 10546416012.

The previous prime is 21412420501. The next prime is 21412420537. The reversal of 21412420522 is 22502421412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21412420522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79896958 + ... + 79897225.

It is an arithmetic number, because the mean of its divisors is an integer number (4074751692).

Almost surely, 2^21412420522 is an apocalyptic number.

21412420522 is a deficient number, since it is larger than the sum of its proper divisors (11185593014).

21412420522 is a wasteful number, since it uses less digits than its factorization.

21412420522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159794252.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 21412420522 its reverse (22502421412), we get a palindrome (43914841934).

The spelling of 21412420522 in words is "twenty-one billion, four hundred twelve million, four hundred twenty thousand, five hundred twenty-two".