12101112001 has 4 divisors (see below), whose sum is σ = 13201213104. Its totient is φ = 11001010900.

The previous prime is 12101111963. The next prime is 12101112041. The reversal of 12101112001 is 10021110121.

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 not a de Polignac number, because 12101112001 - 2⁹ = 12101111489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101112041) 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, 550050535 + ... + 550050556.

It is an arithmetic number, because the mean of its divisors is an integer number (3300303276).

Almost surely, 2^12101112001 is an apocalyptic number.

12101112001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101112001 is a deficient number, since it is larger than the sum of its proper divisors (1100101103).

12101112001 is a wasteful number, since it uses less digits than its factorization.

12101112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100101102.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12101112001 its reverse (10021110121), we get a palindrome (22122222122).

The spelling of 12101112001 in words is "twelve billion, one hundred one million, one hundred twelve thousand, one".