2220121202111 has 4 divisors (see below), whose sum is σ = 2250533821392. Its totient is φ = 2189708582832.

The previous prime is 2220121202083. The next prime is 2220121202149. The reversal of 2220121202111 is 1112021210222.

2220121202111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2220121202111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220121202111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220121202191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15206309531 + ... + 15206309676.

It is an arithmetic number, because the mean of its divisors is an integer number (562633455348).

Almost surely, 2^{2220121202111} is an apocalyptic number.

2220121202111 is a deficient number, since it is larger than the sum of its proper divisors (30412619281).

2220121202111 is an equidigital number, since it uses as much as digits as its factorization.

2220121202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30412619280.

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

Adding to 2220121202111 its reverse (1112021210222), we get a palindrome (3332142412333).

The spelling of 2220121202111 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred eleven".