11211000122211 has 128 divisors (see below), whose sum is σ = 16121016532992. Its totient is φ = 6919178112000.

The previous prime is 11211000122197. The next prime is 11211000122237. The reversal of 11211000122211 is 11222100011211.

It is a happy number.

It is not a de Polignac number, because 11211000122211 - 2⁷ = 11211000122083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211000122281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17435458656 + ... + 17435459298.

It is an arithmetic number, because the mean of its divisors is an integer number (125945441664).

Almost surely, 2^{11211000122211} is an apocalyptic number.

11211000122211 is a deficient number, since it is larger than the sum of its proper divisors (4910016410781).

11211000122211 is a wasteful number, since it uses less digits than its factorization.

11211000122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273.

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

Adding to 11211000122211 its reverse (11222100011211), we get a palindrome (22433100133422).

The spelling of 11211000122211 in words is "eleven trillion, two hundred eleven billion, one hundred twenty-two thousand, two hundred eleven".