201221233102123 has 4 divisors (see below), whose sum is σ = 216699789494608. Its totient is φ = 185742676709640.

The previous prime is 201221233102009. The next prime is 201221233102147. The reversal of 201221233102123 is 321201332122102.

201221233102123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201221233102123 - 2⁹ = 201221233101611 is a prime.

It is a super-3 number, since 3×201221233102123³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221233102193) 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, 7739278196223 + ... + 7739278196248.

It is an arithmetic number, because the mean of its divisors is an integer number (54174947373652).

Almost surely, 2^{201221233102123} is an apocalyptic number.

201221233102123 is a deficient number, since it is larger than the sum of its proper divisors (15478556392485).

201221233102123 is a wasteful number, since it uses less digits than its factorization.

201221233102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15478556392484.

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

Adding to 201221233102123 its reverse (321201332122102), we get a palindrome (522422565224225).

The spelling of 201221233102123 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred thirty-three million, one hundred two thousand, one hundred twenty-three".