2101200001121 has 8 divisors (see below), whose sum is σ = 2262975865920. Its totient is φ = 1939444864272.

The previous prime is 2101200001111. The next prime is 2101200001163. The reversal of 2101200001121 is 1211000021012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101200001121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101200001111) 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, 4971125 + ... + 5377218.

It is an arithmetic number, because the mean of its divisors is an integer number (282871983240).

Almost surely, 2^{2101200001121} is an apocalyptic number.

It is an amenable number.

2101200001121 is a deficient number, since it is larger than the sum of its proper divisors (161775864799).

2101200001121 is a wasteful number, since it uses less digits than its factorization.

2101200001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363975.

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

Adding to 2101200001121 its reverse (1211000021012), we get a palindrome (3312200022133).

The spelling of 2101200001121 in words is "two trillion, one hundred one billion, two hundred million, one thousand, one hundred twenty-one".