2100121222011 has 16 divisors (see below), whose sum is σ = 2839935375360. Its totient is φ = 1380198592640.

The previous prime is 2100121221997. The next prime is 2100121222039. The reversal of 2100121222011 is 1102221210012.

It is a cyclic number.

It is not a de Polignac number, because 2100121222011 - 2²⁹ = 2099584351099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2100121262011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242595 + ... + 2396723.

It is an arithmetic number, because the mean of its divisors is an integer number (177495960960).

Almost surely, 2^{2100121222011} is an apocalyptic number.

2100121222011 is a deficient number, since it is larger than the sum of its proper divisors (739814153349).

2100121222011 is a wasteful number, since it uses less digits than its factorization.

2100121222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162746.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2100121222011 its reverse (1102221210012), we get a palindrome (3202342432023).

The spelling of 2100121222011 in words is "two trillion, one hundred billion, one hundred twenty-one million, two hundred twenty-two thousand, eleven".