102111231101 has 4 divisors (see below), whose sum is σ = 111394070304. Its totient is φ = 92828391900.

The previous prime is 102111230993. The next prime is 102111231109. The reversal of 102111231101 is 101132111201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101132111201 = 11 ⋅9193828291.

It is a cyclic number.

It is not a de Polignac number, because 102111231101 - 2¹⁸ = 102110968957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111231109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4641419585 + ... + 4641419606.

It is an arithmetic number, because the mean of its divisors is an integer number (27848517576).

Almost surely, 2^102111231101 is an apocalyptic number.

102111231101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102111231101 is a deficient number, since it is larger than the sum of its proper divisors (9282839203).

102111231101 is an equidigital number, since it uses as much as digits as its factorization.

102111231101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9282839202.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 102111231101 its reverse (101132111201), we get a palindrome (203243342302).

The spelling of 102111231101 in words is "one hundred two billion, one hundred eleven million, two hundred thirty-one thousand, one hundred one".