2001102123 has 8 divisors (see below), whose sum is σ = 2693072448. Its totient is φ = 1321599944.

The previous prime is 2001102121. The next prime is 2001102157. The reversal of 2001102123 is 3212011002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001102123 - 2¹ = 2001102121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001102099 and 2001102108.

It is not an unprimeable number, because it can be changed into a prime (2001102121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3116661 + ... + 3117302.

It is an arithmetic number, because the mean of its divisors is an integer number (336634056).

Almost surely, 2^2001102123 is an apocalyptic number.

2001102123 is a deficient number, since it is larger than the sum of its proper divisors (691970325).

2001102123 is a wasteful number, since it uses less digits than its factorization.

2001102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234073.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2001102123 is about 44733.6799626411. The cubic root of 2001102123 is about 1260.1524387248.

Adding to 2001102123 its reverse (3212011002), we get a palindrome (5213113125).

The spelling of 2001102123 in words is "two billion, one million, one hundred two thousand, one hundred twenty-three".