2100001122111 has 8 divisors (see below), whose sum is σ = 2890324125184. Its totient is φ = 1354839433560.

The previous prime is 2100001122097. The next prime is 2100001122211. The reversal of 2100001122111 is 1112211000012.

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

It is not a de Polignac number, because 2100001122111 - 2⁷ = 2100001121983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100001122211) 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, 11290328521 + ... + 11290328706.

It is an arithmetic number, because the mean of its divisors is an integer number (361290515648).

Almost surely, 2^{2100001122111} is an apocalyptic number.

2100001122111 is a deficient number, since it is larger than the sum of its proper divisors (790323003073).

2100001122111 is a wasteful number, since it uses less digits than its factorization.

2100001122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22580657261.

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

Adding to 2100001122111 its reverse (1112211000012), we get a palindrome (3212212122123).

The spelling of 2100001122111 in words is "two trillion, one hundred billion, one million, one hundred twenty-two thousand, one hundred eleven".