12011203122211 has 16 divisors (see below), whose sum is σ = 12094868717568. Its totient is φ = 11927765599200.

The previous prime is 12011203122137. The next prime is 12011203122241. The reversal of 12011203122211 is 11222130211021.

It is a cyclic number.

It is not a de Polignac number, because 12011203122211 - 2²¹ = 12011201025059 is a prime.

It is a super-2 number, since 2×12011203122211² (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 (12011203122241) 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, 451688526 + ... + 451715116.

It is an arithmetic number, because the mean of its divisors is an integer number (755929294848).

Almost surely, 2^{12011203122211} is an apocalyptic number.

12011203122211 is a deficient number, since it is larger than the sum of its proper divisors (83665595357).

12011203122211 is a wasteful number, since it uses less digits than its factorization.

12011203122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30762.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12011203122211 its reverse (11222130211021), we get a palindrome (23233333333232).

The spelling of 12011203122211 in words is "twelve trillion, eleven billion, two hundred three million, one hundred twenty-two thousand, two hundred eleven".