210133012123 has 16 divisors (see below), whose sum is σ = 234263953440. Its totient is φ = 187315200000.

The previous prime is 210133012099. The next prime is 210133012127. The reversal of 210133012123 is 321210331012.

It is a cyclic number.

It is not a de Polignac number, because 210133012123 - 2³³ = 201543077531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 210133012123.

It is not an unprimeable number, because it can be changed into a prime (210133012127) 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, 1211023 + ... + 1373623.

It is an arithmetic number, because the mean of its divisors is an integer number (14641497090).

Almost surely, 2^210133012123 is an apocalyptic number.

210133012123 is a deficient number, since it is larger than the sum of its proper divisors (24130941317).

210133012123 is a wasteful number, since it uses less digits than its factorization.

210133012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166638.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210133012123 its reverse (321210331012), we get a palindrome (531343343135).

The spelling of 210133012123 in words is "two hundred ten billion, one hundred thirty-three million, twelve thousand, one hundred twenty-three".