123130001121 has 16 divisors (see below), whose sum is σ = 165309324288. Its totient is φ = 81518994000.

The previous prime is 123130001047. The next prime is 123130001147. The reversal of 123130001121 is 121100031321.

It is a happy number.

It is not a de Polignac number, because 123130001121 - 2¹³ = 123129992929 is a prime.

It is a super-2 number, since 2×123130001121² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123130001121.

It is not an unprimeable number, because it can be changed into a prime (123130001171) 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, 1568476 + ... + 1645106.

It is an arithmetic number, because the mean of its divisors is an integer number (10331832768).

Almost surely, 2^123130001121 is an apocalyptic number.

It is an amenable number.

123130001121 is a deficient number, since it is larger than the sum of its proper divisors (42179323167).

123130001121 is a wasteful number, since it uses less digits than its factorization.

123130001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80332.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123130001121 its reverse (121100031321), we get a palindrome (244230032442).

The spelling of 123130001121 in words is "one hundred twenty-three billion, one hundred thirty million, one thousand, one hundred twenty-one".