201201001302123 has 24 divisors (see below), whose sum is σ = 291438661413120. Its totient is φ = 133758057542400.

The previous prime is 201201001302083. The next prime is 201201001302143. The reversal of 201201001302123 is 321203100102102.

201201001302123 is a `hidden beast` number, since 20 + 120 + 100 + 1 + 302 + 123 = 666.

It is not a de Polignac number, because 201201001302123 - 2³⁷ = 201063562348651 is a prime.

It is a super-2 number, since 2×201201001302123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201201001302096 and 201201001302105.

It is not an unprimeable number, because it can be changed into a prime (201201001302143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3020790 + ... + 20286132.

It is an arithmetic number, because the mean of its divisors is an integer number (12143277558880).

Almost surely, 2^{201201001302123} is an apocalyptic number.

201201001302123 is a deficient number, since it is larger than the sum of its proper divisors (90237660110997).

201201001302123 is a wasteful number, since it uses less digits than its factorization.

201201001302123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17268979 (or 17268976 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201201001302123 its reverse (321203100102102), we get a palindrome (522404101404225).

The spelling of 201201001302123 in words is "two hundred one trillion, two hundred one billion, one million, three hundred two thousand, one hundred twenty-three".