161421103226 has 8 divisors (see below), whose sum is σ = 247283392320. Its totient is φ = 78993305788.

The previous prime is 161421103177. The next prime is 161421103303. The reversal of 161421103226 is 622301124161.

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, 858622796 + ... + 858622983.

It is an arithmetic number, because the mean of its divisors is an integer number (30910424040).

Almost surely, 2^161421103226 is an apocalyptic number.

161421103226 is a deficient number, since it is larger than the sum of its proper divisors (85862289094).

161421103226 is a wasteful number, since it uses less digits than its factorization.

161421103226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717245828.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 161421103226 its reverse (622301124161), we get a palindrome (783722227387).

The spelling of 161421103226 in words is "one hundred sixty-one billion, four hundred twenty-one million, one hundred three thousand, two hundred twenty-six".