2001230230122 has 24 divisors (see below), whose sum is σ = 4336032189060. Its totient is φ = 667071611520.

The previous prime is 2001230230073. The next prime is 2001230230123. The reversal of 2001230230122 is 2210320321002.

2001230230122 is a `hidden beast` number, since 200 + 1 + 230 + 230 + 1 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1967031495081 + 34198735041 = 1402509^2 + 184929^2 .

It is a super-2 number, since 2×2001230230122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2001230230095 and 2001230230104.

It is not an unprimeable number, because it can be changed into a prime (2001230230123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2529922 + ... + 3225362.

Almost surely, 2^{2001230230122} is an apocalyptic number.

2001230230122 is an abundant number, since it is smaller than the sum of its proper divisors (2334801958938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001230230122 is a wasteful number, since it uses less digits than its factorization.

2001230230122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855318 (or 855315 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2001230230122 its reverse (2210320321002), we get a palindrome (4211550551124).

The spelling of 2001230230122 in words is "two trillion, one billion, two hundred thirty million, two hundred thirty thousand, one hundred twenty-two".