11212621211 has 6 divisors (see below), whose sum is σ = 12324616836. Its totient is φ = 10193291900.

The previous prime is 11212621207. The next prime is 11212621241.

11212621211 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 11212621211 - 2² = 11212621207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212621241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46333025 + ... + 46333266.

It is an arithmetic number, because the mean of its divisors is an integer number (2054102806).

Almost surely, 2^11212621211 is an apocalyptic number.

11212621211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11212621211 is a deficient number, since it is larger than the sum of its proper divisors (1111995625).

11212621211 is an equidigital number, since it uses as much as digits as its factorization.

11212621211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92666313 (or 92666302 counting only the distinct ones).

The product of its digits is 96, while the sum is 20.

The spelling of 11212621211 in words is "eleven billion, two hundred twelve million, six hundred twenty-one thousand, two hundred eleven".