12101122211 has 16 divisors (see below), whose sum is σ = 13334169600. Its totient is φ = 10938110400.

The previous prime is 12101122193. The next prime is 12101122219. The reversal of 12101122211 is 11222110121.

It is a cyclic number.

It is not a de Polignac number, because 12101122211 - 2¹⁰ = 12101121187 is a prime.

It is a super-4 number, since 4×12101122211⁴ (a number of 41 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (12101122219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102866 + ... + 186503.

It is an arithmetic number, because the mean of its divisors is an integer number (833385600).

Almost surely, 2^12101122211 is an apocalyptic number.

12101122211 is a deficient number, since it is larger than the sum of its proper divisors (1233047389).

12101122211 is a wasteful number, since it uses less digits than its factorization.

12101122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289490.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12101122211 its reverse (11222110121), we get a palindrome (23323232332).

The spelling of 12101122211 in words is "twelve billion, one hundred one million, one hundred twenty-two thousand, two hundred eleven".