20023452111 has 32 divisors (see below), whose sum is σ = 29521400832. Its totient is φ = 11994192000.

The previous prime is 20023452089. The next prime is 20023452139. The reversal of 20023452111 is 11125432002.

It is not a de Polignac number, because 20023452111 - 2⁹ = 20023451599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023452181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470986 + ... + 511736.

It is an arithmetic number, because the mean of its divisors is an integer number (922543776).

Almost surely, 2^20023452111 is an apocalyptic number.

20023452111 is a deficient number, since it is larger than the sum of its proper divisors (9497948721).

20023452111 is a wasteful number, since it uses less digits than its factorization.

20023452111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41103.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 20023452111 its reverse (11125432002), we get a palindrome (31148884113).

The spelling of 20023452111 in words is "twenty billion, twenty-three million, four hundred fifty-two thousand, one hundred eleven".