2100120121001 has 8 divisors (see below), whose sum is σ = 2400148083840. Its totient is φ = 1800094858848.

The previous prime is 2100120120997. The next prime is 2100120121039. The reversal of 2100120121001 is 1001210210012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100120121001 - 2² = 2100120120997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100120121081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427900 + ... + 2497826.

It is an arithmetic number, because the mean of its divisors is an integer number (300018510480).

Almost surely, 2^{2100120121001} is an apocalyptic number.

It is an amenable number.

2100120121001 is a deficient number, since it is larger than the sum of its proper divisors (300027962839).

2100120121001 is a wasteful number, since it uses less digits than its factorization.

2100120121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350343.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2100120121001 its reverse (1001210210012), we get a palindrome (3101330331013).

The spelling of 2100120121001 in words is "two trillion, one hundred billion, one hundred twenty million, one hundred twenty-one thousand, one".