2121120222011 has 16 divisors (see below), whose sum is σ = 2440795405824. Its totient is φ = 1805625877824.

The previous prime is 2121120221953. The next prime is 2121120222019. The reversal of 2121120222011 is 1102220211212.

It is a cyclic number.

It is not a de Polignac number, because 2121120222011 - 2¹⁸ = 2121119959867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121120222019) 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, 879791 + ... + 2239703.

It is an arithmetic number, because the mean of its divisors is an integer number (152549712864).

Almost surely, 2^{2121120222011} is an apocalyptic number.

2121120222011 is a deficient number, since it is larger than the sum of its proper divisors (319675183813).

2121120222011 is a wasteful number, since it uses less digits than its factorization.

2121120222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361450.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121120222011 its reverse (1102220211212), we get a palindrome (3223340433223).

The spelling of 2121120222011 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, eleven".