102020112111 has 32 divisors (see below), whose sum is σ = 137778264000. Its totient is φ = 67144734720.

The previous prime is 102020112109. The next prime is 102020112149. The reversal of 102020112111 is 111211020201.

It is not a de Polignac number, because 102020112111 - 2¹ = 102020112109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020112211) 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, 58597701 + ... + 58599441.

It is an arithmetic number, because the mean of its divisors is an integer number (4305570750).

Almost surely, 2^102020112111 is an apocalyptic number.

102020112111 is a deficient number, since it is larger than the sum of its proper divisors (35758151889).

102020112111 is a wasteful number, since it uses less digits than its factorization.

102020112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102020112111 its reverse (111211020201), we get a palindrome (213231132312).

The spelling of 102020112111 in words is "one hundred two billion, twenty million, one hundred twelve thousand, one hundred eleven".