201010021123 has 16 divisors (see below), whose sum is σ = 206313308320. Its totient is φ = 195778446336.

The previous prime is 201010021117. The next prime is 201010021133. The reversal of 201010021123 is 321120010102.

It is a cyclic number.

It is not a de Polignac number, because 201010021123 - 2²⁹ = 200473150211 is a prime.

It is a super-3 number, since 3×201010021123³ (a number of 35 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 (201010021133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6932965 + ... + 6961897.

It is an arithmetic number, because the mean of its divisors is an integer number (12894581770).

Almost surely, 2^201010021123 is an apocalyptic number.

201010021123 is a deficient number, since it is larger than the sum of its proper divisors (5303287197).

201010021123 is a wasteful number, since it uses less digits than its factorization.

201010021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30166.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201010021123 its reverse (321120010102), we get a palindrome (522130031225).

The spelling of 201010021123 in words is "two hundred one billion, ten million, twenty-one thousand, one hundred twenty-three".