123210011 has 8 divisors (see below), whose sum is σ = 128853504. Its totient is φ = 117590440.

The previous prime is 123209987. The next prime is 123210019. The reversal of 123210011 is 110012321.

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 123210011 - 2²² = 119015707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123209974 and 123210001.

It is not an unprimeable number, because it can be changed into a prime (123210019) 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, 5006 + ... + 16476.

It is an arithmetic number, because the mean of its divisors is an integer number (16106688).

Almost surely, 2^123210011 is an apocalyptic number.

123210011 is a deficient number, since it is larger than the sum of its proper divisors (5643493).

123210011 is a wasteful number, since it uses less digits than its factorization.

123210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11961.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 123210011 is about 11100.0004954955. Note that the first 3 decimals coincide. The cubic root of 123210011 is about 497.6018642792.

Subtracting from 123210011 its sum of digits (11), we obtain a square (123210000 = 11100²).

Adding to 123210011 its reverse (110012321), we get a palindrome (233222332).

The spelling of 123210011 in words is "one hundred twenty-three million, two hundred ten thousand, eleven".