20111041023 has 16 divisors (see below), whose sum is σ = 26970505056. Its totient is φ = 13329653760.

The previous prime is 20111040947. The next prime is 20111041043. The reversal of 20111041023 is 32014011102.

It is not a de Polignac number, because 20111041023 - 2¹² = 20111036927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111040993 and 20111041011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111041043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420511 + ... + 465887.

It is an arithmetic number, because the mean of its divisors is an integer number (1685656566).

Almost surely, 2^20111041023 is an apocalyptic number.

20111041023 is a deficient number, since it is larger than the sum of its proper divisors (6859464033).

20111041023 is a wasteful number, since it uses less digits than its factorization.

20111041023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46234.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20111041023 its reverse (32014011102), we get a palindrome (52125052125).

The spelling of 20111041023 in words is "twenty billion, one hundred eleven million, forty-one thousand, twenty-three".