201220222444423 has 12 divisors (see below), whose sum is σ = 252078080865240. Its totient is φ = 159207208966512.

The previous prime is 201220222444399. The next prime is 201220222444427. The reversal of 201220222444423 is 324444222022102.

201220222444423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201220222444423 - 2¹⁷ = 201220222313351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220222444427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157943659053 + ... + 157943660326.

It is an arithmetic number, because the mean of its divisors is an integer number (21006506738770).

Almost surely, 2^{201220222444423} is an apocalyptic number.

201220222444423 is a deficient number, since it is larger than the sum of its proper divisors (50857858420817).

201220222444423 is a wasteful number, since it uses less digits than its factorization.

201220222444423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315887319406 (or 315887319399 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 201220222444423 its reverse (324444222022102), we get a palindrome (525664444466525).

The spelling of 201220222444423 in words is "two hundred one trillion, two hundred twenty billion, two hundred twenty-two million, four hundred forty-four thousand, four hundred twenty-three".