20124102111 has 32 divisors (see below), whose sum is σ = 28694803200. Its totient is φ = 12507644160.

The previous prime is 20124102109. The next prime is 20124102127. The reversal of 20124102111 is 11120142102.

It is not a de Polignac number, because 20124102111 - 2¹ = 20124102109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124102101) 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, 5042905 + ... + 5046893.

It is an arithmetic number, because the mean of its divisors is an integer number (896712600).

Almost surely, 2^20124102111 is an apocalyptic number.

20124102111 is a deficient number, since it is larger than the sum of its proper divisors (8570701089).

20124102111 is a wasteful number, since it uses less digits than its factorization.

20124102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20124102111 its reverse (11120142102), we get a palindrome (31244244213).

The spelling of 20124102111 in words is "twenty billion, one hundred twenty-four million, one hundred two thousand, one hundred eleven".