12101000121001 has 4 divisors (see below), whose sum is σ = 13201091041104. Its totient is φ = 11000909200900.

The previous prime is 12101000120981. The next prime is 12101000121013. The reversal of 12101000121001 is 10012100010121.

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 12101000121001 - 2¹⁷ = 12100999989929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101000125001) 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, 550045460035 + ... + 550045460056.

It is an arithmetic number, because the mean of its divisors is an integer number (3300272760276).

Almost surely, 2^{12101000121001} is an apocalyptic number.

12101000121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101000121001 is a deficient number, since it is larger than the sum of its proper divisors (1100090920103).

12101000121001 is a wasteful number, since it uses less digits than its factorization.

12101000121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100090920102.

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

Adding to 12101000121001 its reverse (10012100010121), we get a palindrome (22113100131122).

The spelling of 12101000121001 in words is "twelve trillion, one hundred one billion, one hundred twenty-one thousand, one".