201201011123 has 16 divisors (see below), whose sum is σ = 230623842816. Its totient is φ = 171948828480.

The previous prime is 201201011117. The next prime is 201201011131. The reversal of 201201011123 is 321110102102.

It is a cyclic number.

It is not a de Polignac number, because 201201011123 - 2¹² = 201201007027 is a prime.

It is a super-2 number, since 2×201201011123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201201011098 and 201201011107.

It is not an unprimeable number, because it can be changed into a prime (201201011153) 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, 3556940 + ... + 3613062.

It is an arithmetic number, because the mean of its divisors is an integer number (14413990176).

Almost surely, 2^201201011123 is an apocalyptic number.

201201011123 is a deficient number, since it is larger than the sum of its proper divisors (29422831693).

201201011123 is an equidigital number, since it uses as much as digits as its factorization.

201201011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57634.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201201011123 its reverse (321110102102), we get a palindrome (522311113225).

The spelling of 201201011123 in words is "two hundred one billion, two hundred one million, eleven thousand, one hundred twenty-three".