221234020401 has 8 divisors (see below), whose sum is σ = 294980966784. Its totient is φ = 147488210480.

The previous prime is 221234020391. The next prime is 221234020411. The reversal of 221234020401 is 104020432122.

It is an interprime number because it is at equal distance from previous prime (221234020391) and next prime (221234020411).

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

It is a cyclic number.

It is not a de Polignac number, because 221234020401 - 2¹⁵ = 221233987633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221234020411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417955 + ... + 785591.

It is an arithmetic number, because the mean of its divisors is an integer number (36872620848).

Almost surely, 2^221234020401 is an apocalyptic number.

It is an amenable number.

221234020401 is a deficient number, since it is larger than the sum of its proper divisors (73746946383).

221234020401 is a wasteful number, since it uses less digits than its factorization.

221234020401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568231.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221234020401 its reverse (104020432122), we get a palindrome (325254452523).

The spelling of 221234020401 in words is "two hundred twenty-one billion, two hundred thirty-four million, twenty thousand, four hundred one".