102011220112111 has 4 divisors (see below), whose sum is σ = 106446490551792. Its totient is φ = 97575949672432.

The previous prime is 102011220112091. The next prime is 102011220112121. The reversal of 102011220112111 is 111211022110201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102011220112111 - 2³³ = 102002630177519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011220112121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217635219806 + ... + 2217635219851.

It is an arithmetic number, because the mean of its divisors is an integer number (26611622637948).

Almost surely, 2^{102011220112111} is an apocalyptic number.

102011220112111 is a deficient number, since it is larger than the sum of its proper divisors (4435270439681).

102011220112111 is an equidigital number, since it uses as much as digits as its factorization.

102011220112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435270439680.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 102011220112111 its reverse (111211022110201), we get a palindrome (213222242222312).

The spelling of 102011220112111 in words is "one hundred two trillion, eleven billion, two hundred twenty million, one hundred twelve thousand, one hundred eleven".