2100011121211 has 8 divisors (see below), whose sum is σ = 2200720747680. Its totient is φ = 2000085227712.

The previous prime is 2100011121199. The next prime is 2100011121217. The reversal of 2100011121211 is 1121211100012.

It is a happy number.

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 2100011121211 - 2⁷ = 2100011121083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100011121191 and 2100011121200.

It is not an unprimeable number, because it can be changed into a prime (2100011121217) 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, 195927756 + ... + 195938473.

It is an arithmetic number, because the mean of its divisors is an integer number (275090093460).

Almost surely, 2^{2100011121211} is an apocalyptic number.

2100011121211 is a deficient number, since it is larger than the sum of its proper divisors (100709626469).

2100011121211 is a wasteful number, since it uses less digits than its factorization.

2100011121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391866485.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2100011121211 its reverse (1121211100012), we get a palindrome (3221222221223).

It can be divided in two parts, 2100011 and 121211, that added together give a palindrome (2221222).

The spelling of 2100011121211 in words is "two trillion, one hundred billion, eleven million, one hundred twenty-one thousand, two hundred eleven".