11212122002111 has 4 divisors (see below), whose sum is σ = 11218127425512. Its totient is φ = 11206116578712.

The previous prime is 11212122002093. The next prime is 11212122002129. The reversal of 11212122002111 is 11120022121211.

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

It is an interprime number because it is at equal distance from previous prime (11212122002093) and next prime (11212122002129).

It is a cyclic number.

It is not a de Polignac number, because 11212122002111 - 2¹⁸ = 11212121739967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212122002111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212122002611) 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, 3002708900 + ... + 3002712633.

It is an arithmetic number, because the mean of its divisors is an integer number (2804531856378).

Almost surely, 2^{11212122002111} is an apocalyptic number.

11212122002111 is a deficient number, since it is larger than the sum of its proper divisors (6005423401).

11212122002111 is an equidigital number, since it uses as much as digits as its factorization.

11212122002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005423400.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11212122002111 its reverse (11120022121211), we get a palindrome (22332144123322).

The spelling of 11212122002111 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-two million, two thousand, one hundred eleven".