12101001 has 8 divisors (see below), whose sum is σ = 17601504. Its totient is φ = 7333920.

The previous prime is 12100993. The next prime is 12101003. The reversal of 12101001 is 10010121.

12101001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12101001 - 2³ = 12100993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12101003) 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 7 ways as a sum of consecutive naturals, for example, 183316 + ... + 183381.

It is an arithmetic number, because the mean of its divisors is an integer number (2200188).

Almost surely, 2^12101001 is an apocalyptic number.

12101001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101001 is a deficient number, since it is larger than the sum of its proper divisors (5500503).

12101001 is a wasteful number, since it uses less digits than its factorization.

12101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366711.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 12101001 is about 3478.6493068431. The cubic root of 12101001 is about 229.5833730529.

Adding to 12101001 its reverse (10010121), we get a palindrome (22111122).

Multiplying 12101001 by its reverse (10010121), we get a palindrome (121132484231121).

It can be divided in two parts, 1210 and 1001, that added together give a triangular number (2211 = T₆₆).

The spelling of 12101001 in words is "twelve million, one hundred one thousand, one".