11211111102211 has 4 divisors (see below), whose sum is σ = 11315887841592. Its totient is φ = 11106334362832.

The previous prime is 11211111102073. The next prime is 11211111102397. The reversal of 11211111102211 is 11220111111211.

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

It is a cyclic number.

It is not a de Polignac number, because 11211111102211 - 2¹⁵ = 11211111069443 is a prime.

It is a super-2 number, since 2×11211111102211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211111102511) 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, 52388369530 + ... + 52388369743.

It is an arithmetic number, because the mean of its divisors is an integer number (2828971960398).

Almost surely, 2^{11211111102211} is an apocalyptic number.

11211111102211 is a deficient number, since it is larger than the sum of its proper divisors (104776739381).

11211111102211 is a wasteful number, since it uses less digits than its factorization.

11211111102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104776739380.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11211111102211 its reverse (11220111111211), we get a palindrome (22431222213422).

The spelling of 11211111102211 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, one hundred two thousand, two hundred eleven".