20100011123223 has 24 divisors (see below), whose sum is σ = 29611426663728. Its totient is φ = 13133720101632.

The previous prime is 20100011123219. The next prime is 20100011123237. The reversal of 20100011123223 is 32232111000102.

It is not a de Polignac number, because 20100011123223 - 2² = 20100011123219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20100011123196 and 20100011123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100011123243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21099165 + ... + 22031222.

It is an arithmetic number, because the mean of its divisors is an integer number (1233809444322).

Almost surely, 2^{20100011123223} is an apocalyptic number.

20100011123223 is a deficient number, since it is larger than the sum of its proper divisors (9511415540505).

20100011123223 is a wasteful number, since it uses less digits than its factorization.

20100011123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43131423 (or 43131420 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20100011123223 its reverse (32232111000102), we get a palindrome (52332122123325).

The spelling of 20100011123223 in words is "twenty trillion, one hundred billion, eleven million, one hundred twenty-three thousand, two hundred twenty-three".