12101101001 has 4 divisors (see below), whose sum is σ = 13201201104. Its totient is φ = 11001000900.

The previous prime is 12101100989. The next prime is 12101101009. The reversal of 12101101001 is 10010110121.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 12101101001 - 2⁶ = 12101100937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12101101001.

It is not an unprimeable number, because it can be changed into a prime (12101101009) 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, 550050035 + ... + 550050056.

It is an arithmetic number, because the mean of its divisors is an integer number (3300300276).

Almost surely, 2^12101101001 is an apocalyptic number.

12101101001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101101001 is a deficient number, since it is larger than the sum of its proper divisors (1100100103).

12101101001 is a wasteful number, since it uses less digits than its factorization.

12101101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100100102.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12101101001 its reverse (10010110121), we get a palindrome (22111211122).

The spelling of 12101101001 in words is "twelve billion, one hundred one million, one hundred one thousand, one".