201121021323223 has 8 divisors (see below), whose sum is σ = 202658877210240. Its totient is φ = 199583204541240.

The previous prime is 201121021323133. The next prime is 201121021323239. The reversal of 201121021323223 is 322323120121102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201121021323223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121021323263) 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, 591136 + ... + 20064682.

It is an arithmetic number, because the mean of its divisors is an integer number (25332359651280).

Almost surely, 2^{201121021323223} is an apocalyptic number.

201121021323223 is a deficient number, since it is larger than the sum of its proper divisors (1537855887017).

201121021323223 is a wasteful number, since it uses less digits than its factorization.

201121021323223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19552517.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 201121021323223 its reverse (322323120121102), we get a palindrome (523444141444325).

The spelling of 201121021323223 in words is "two hundred one trillion, one hundred twenty-one billion, twenty-one million, three hundred twenty-three thousand, two hundred twenty-three".