102111213022111 has 4 divisors (see below), whose sum is σ = 102111641818312. Its totient is φ = 102110784225912.

The previous prime is 102111213022087. The next prime is 102111213022127. The reversal of 102111213022111 is 111220312111201.

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 102111213022111 - 2⁵ = 102111213022079 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 (102111213022711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214040700 + ... + 214517233.

It is an arithmetic number, because the mean of its divisors is an integer number (25527910454578).

Almost surely, 2^{102111213022111} is an apocalyptic number.

102111213022111 is a deficient number, since it is larger than the sum of its proper divisors (428796201).

102111213022111 is an equidigital number, since it uses as much as digits as its factorization.

102111213022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428796200.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 102111213022111 its reverse (111220312111201), we get a palindrome (213331525133312).

The spelling of 102111213022111 in words is "one hundred two trillion, one hundred eleven billion, two hundred thirteen million, twenty-two thousand, one hundred eleven".