20010211111123 has 8 divisors (see below), whose sum is σ = 20067154564496. Its totient is φ = 19953312271200.

The previous prime is 20010211111073. The next prime is 20010211111157. The reversal of 20010211111123 is 32111111201002.

It is a happy number.

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 20010211111123 - 2²⁹ = 20009674240211 is a prime.

It is a super-2 number, since 2×20010211111123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010211111097 and 20010211111106.

It is not an unprimeable number, because it can be changed into a prime (20010211111823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10254936 + ... + 12049237.

It is an arithmetic number, because the mean of its divisors is an integer number (2508394320562).

Almost surely, 2^{20010211111123} is an apocalyptic number.

20010211111123 is a deficient number, since it is larger than the sum of its proper divisors (56943453373).

20010211111123 is a wasteful number, since it uses less digits than its factorization.

20010211111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22306725.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 20010211111123 its reverse (32111111201002), we get a palindrome (52121322312125).

The spelling of 20010211111123 in words is "twenty trillion, ten billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty-three".