201000122121123 has 128 divisors (see below), whose sum is σ = 333455093637120. Its totient is φ = 118827979776000.

The previous prime is 201000122121091. The next prime is 201000122121163. The reversal of 201000122121123 is 321121221000102.

It is not a de Polignac number, because 201000122121123 - 2⁵ = 201000122121091 is a prime.

It is a super-2 number, since 2×201000122121123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201000122121096 and 201000122121105.

It is not an unprimeable number, because it can be changed into a prime (201000122121163) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 839055603 + ... + 839295123.

It is an arithmetic number, because the mean of its divisors is an integer number (2605117919040).

Almost surely, 2^{201000122121123} is an apocalyptic number.

201000122121123 is a deficient number, since it is larger than the sum of its proper divisors (132454971515997).

201000122121123 is a wasteful number, since it uses less digits than its factorization.

201000122121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240138 (or 240132 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201000122121123 its reverse (321121221000102), we get a palindrome (522121343121225).

The spelling of 201000122121123 in words is "two hundred one trillion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-three".