2123102011 has 8 divisors (see below), whose sum is σ = 2185227200. Its totient is φ = 2061858240.

The previous prime is 2123101993. The next prime is 2123102017. The reversal of 2123102011 is 1102013212.

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 2123102011 - 2²¹ = 2121004859 is a prime.

It is a super-2 number, since 2×2123102011² = 9015124298224488242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123101982 and 2123102000.

It is not an unprimeable number, because it can be changed into a prime (2123102017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215466 + ... + 225103.

It is an arithmetic number, because the mean of its divisors is an integer number (273153400).

Almost surely, 2^2123102011 is an apocalyptic number.

2123102011 is a deficient number, since it is larger than the sum of its proper divisors (62125189).

2123102011 is an equidigital number, since it uses as much as digits as its factorization.

2123102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440709.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2123102011 is about 46077.1311064393. The cubic root of 2123102011 is about 1285.2579154964.

Adding to 2123102011 its reverse (1102013212), we get a palindrome (3225115223).

The spelling of 2123102011 in words is "two billion, one hundred twenty-three million, one hundred two thousand, eleven".