421204223340211 has 4 divisors (see below), whose sum is σ = 421464386543400. Its totient is φ = 420944060137024.

The previous prime is 421204223340179. The next prime is 421204223340353. The reversal of 421204223340211 is 112043322402124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421204223340211 - 2⁵ = 421204223340179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421204223340011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130081599166 + ... + 130081602403.

It is an arithmetic number, because the mean of its divisors is an integer number (105366096635850).

Almost surely, 2^{421204223340211} is an apocalyptic number.

421204223340211 is a deficient number, since it is larger than the sum of its proper divisors (260163203189).

421204223340211 is a wasteful number, since it uses less digits than its factorization.

421204223340211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260163203188.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 421204223340211 its reverse (112043322402124), we get a palindrome (533247545742335).

The spelling of 421204223340211 in words is "four hundred twenty-one trillion, two hundred four billion, two hundred twenty-three million, three hundred forty thousand, two hundred eleven".