20131022111 has 2 divisors, whose sum is σ = 20131022112. Its totient is φ = 20131022110.

The previous prime is 20131022071. The next prime is 20131022129. The reversal of 20131022111 is 11122013102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20131022111 - 2⁶ = 20131022047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131022161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065511055 + 10065511056.

It is an arithmetic number, because the mean of its divisors is an integer number (10065511056).

Almost surely, 2^20131022111 is an apocalyptic number.

20131022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131022111 is an equidigital number, since it uses as much as digits as its factorization.

20131022111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20131022111 its reverse (11122013102), we get a palindrome (31253035213).

Subtracting from 20131022111 its reverse (11122013102), we obtain a palindrome (9009009009).

The spelling of 20131022111 in words is "twenty billion, one hundred thirty-one million, twenty-two thousand, one hundred eleven".