2111220011211 has 32 divisors (see below), whose sum is σ = 2906303250240. Its totient is φ = 1362220955136.

The previous prime is 2111220011209. The next prime is 2111220011227. The reversal of 2111220011211 is 1121100221112.

It is a happy number.

It is not a de Polignac number, because 2111220011211 - 2¹ = 2111220011209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111220011311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28355845 + ... + 28430201.

It is an arithmetic number, because the mean of its divisors is an integer number (90821976570).

Almost surely, 2^{2111220011211} is an apocalyptic number.

2111220011211 is a deficient number, since it is larger than the sum of its proper divisors (795083239029).

2111220011211 is a wasteful number, since it uses less digits than its factorization.

2111220011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75743.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111220011211 its reverse (1121100221112), we get a palindrome (3232320232323).

The spelling of 2111220011211 in words is "two trillion, one hundred eleven billion, two hundred twenty million, eleven thousand, two hundred eleven".