223001661620201 has 4 divisors (see below), whose sum is σ = 223663387619412. Its totient is φ = 222339935620992.

The previous prime is 223001661620159. The next prime is 223001661620251. The reversal of 223001661620201 is 102026166100322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 165608612947801 + 57393048672400 = 12868901^2 + 7575820^2 .

It is a cyclic number.

It is not a de Polignac number, because 223001661620201 - 2³⁰ = 223000587878377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223001661620251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330862999100 + ... + 330862999773.

It is an arithmetic number, because the mean of its divisors is an integer number (55915846904853).

Almost surely, 2^{223001661620201} is an apocalyptic number.

It is an amenable number.

223001661620201 is a deficient number, since it is larger than the sum of its proper divisors (661725999211).

223001661620201 is an equidigital number, since it uses as much as digits as its factorization.

223001661620201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661725999210.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 223001661620201 in words is "two hundred twenty-three trillion, one billion, six hundred sixty-one million, six hundred twenty thousand, two hundred one".