2121222011011 has 32 divisors (see below), whose sum is σ = 2277806469120. Its totient is φ = 1970692179456.

The previous prime is 2121222011009. The next prime is 2121222011021. The reversal of 2121222011011 is 1101102221212.

It is not a de Polignac number, because 2121222011011 - 2¹ = 2121222011009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121222011021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142385115 + ... + 142400011.

It is an arithmetic number, because the mean of its divisors is an integer number (71181452160).

Almost surely, 2^{2121222011011} is an apocalyptic number.

2121222011011 is a deficient number, since it is larger than the sum of its proper divisors (156584458109).

2121222011011 is a wasteful number, since it uses less digits than its factorization.

2121222011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121222011011 its reverse (1101102221212), we get a palindrome (3222324232223).

The spelling of 2121222011011 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, eleven thousand, eleven".