11212123132011 has 4 divisors (see below), whose sum is σ = 14949497509352. Its totient is φ = 7474748754672.

The previous prime is 11212123132009. The next prime is 11212123132027. The reversal of 11212123132011 is 11023132121211.

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

It is not a de Polignac number, because 11212123132011 - 2¹ = 11212123132009 is a prime.

It is a super-2 number, since 2×11212123132011² (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 (11212123132031) 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, 1868687188666 + ... + 1868687188671.

It is an arithmetic number, because the mean of its divisors is an integer number (3737374377338).

Almost surely, 2^{11212123132011} is an apocalyptic number.

11212123132011 is a deficient number, since it is larger than the sum of its proper divisors (3737374377341).

11212123132011 is an equidigital number, since it uses as much as digits as its factorization.

11212123132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737374377340.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 11212123132011 its reverse (11023132121211), we get a palindrome (22235255253222).

The spelling of 11212123132011 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-three million, one hundred thirty-two thousand, eleven".