12100995 has 20 divisors (see below), whose sum is σ = 21692880. Its totient is φ = 6453648.

The previous prime is 12100993. The next prime is 12101003. The reversal of 12100995 is 59900121.

It is a happy number.

It is not a de Polignac number, because 12100995 - 2¹ = 12100993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14535 + ... + 15344.

It is an arithmetic number, because the mean of its divisors is an integer number (1084644).

Almost surely, 2^12100995 is an apocalyptic number.

12100995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12100995 is a deficient number, since it is larger than the sum of its proper divisors (9591885).

12100995 is an equidigital number, since it uses as much as digits as its factorization.

12100995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29896 (or 29887 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 12100995 is about 3478.6484444393. The cubic root of 12100995 is about 229.5833351083.

It can be divided in two parts, 121009 and 95, that added together give a square (121104 = 348²).

The spelling of 12100995 in words is "twelve million, one hundred thousand, nine hundred ninety-five".