2100122011121 has 8 divisors (see below), whose sum is σ = 2103641865024. Its totient is φ = 2096602464240.

The previous prime is 2100122011103. The next prime is 2100122011177. The reversal of 2100122011121 is 1211102210012.

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-2100122011121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100122011096 and 2100122011105.

It is not an unprimeable number, because it can be changed into a prime (2100122014121) 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, 16654310 + ... + 16779936.

It is an arithmetic number, because the mean of its divisors is an integer number (262955233128).

Almost surely, 2^{2100122011121} is an apocalyptic number.

It is an amenable number.

2100122011121 is a deficient number, since it is larger than the sum of its proper divisors (3519853903).

2100122011121 is a wasteful number, since it uses less digits than its factorization.

2100122011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153511.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2100122011121 its reverse (1211102210012), we get a palindrome (3311224221133).

The spelling of 2100122011121 in words is "two trillion, one hundred billion, one hundred twenty-two million, eleven thousand, one hundred twenty-one".