2100121121001 has 8 divisors (see below), whose sum is σ = 2947538415520. Its totient is φ = 1326392286912.

The previous prime is 2100121120957. The next prime is 2100121121071. The reversal of 2100121121001 is 1001211210012.

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

It is not a de Polignac number, because 2100121121001 - 2¹³ = 2100121112809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100121121071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18422115040 + ... + 18422115153.

It is an arithmetic number, because the mean of its divisors is an integer number (368442301940).

Almost surely, 2^{2100121121001} is an apocalyptic number.

It is an amenable number.

2100121121001 is a deficient number, since it is larger than the sum of its proper divisors (847417294519).

2100121121001 is a wasteful number, since it uses less digits than its factorization.

2100121121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36844230215.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2100121121001 its reverse (1001211210012), we get a palindrome (3101332331013).

It can be divided in two parts, 2 and 100121121001, that multiplied together give a palindrome (200242242002).

The spelling of 2100121121001 in words is "two trillion, one hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, one".