13421021405522 has 8 divisors (see below), whose sum is σ = 20559862578816. Its totient is φ = 6567733879252.

The previous prime is 13421021405503. The next prime is 13421021405573. The reversal of 13421021405522 is 22550412012431.

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

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, 71388411638 + ... + 71388411825.

It is an arithmetic number, because the mean of its divisors is an integer number (2569982822352).

Almost surely, 2^{13421021405522} is an apocalyptic number.

13421021405522 is a deficient number, since it is larger than the sum of its proper divisors (7138841173294).

13421021405522 is a wasteful number, since it uses less digits than its factorization.

13421021405522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142776823512.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 13421021405522 its reverse (22550412012431), we get a palindrome (35971433417953).

The spelling of 13421021405522 in words is "thirteen trillion, four hundred twenty-one billion, twenty-one million, four hundred five thousand, five hundred twenty-two".