11212122012021 has 16 divisors (see below), whose sum is σ = 18983487004800. Its totient is φ = 6406926863904.

The previous prime is 11212122012001. The next prime is 11212122012029. The reversal of 11212122012021 is 12021022121211.

It is not a de Polignac number, because 11212122012021 - 2¹⁰ = 11212122010997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212122011985 and 11212122012003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212122012029) 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, 29661698256 + ... + 29661698633.

It is an arithmetic number, because the mean of its divisors is an integer number (1186467937800).

Almost surely, 2^{11212122012021} is an apocalyptic number.

It is an amenable number.

11212122012021 is a deficient number, since it is larger than the sum of its proper divisors (7771364992779).

11212122012021 is an equidigital number, since it uses as much as digits as its factorization.

11212122012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59323396905 (or 59323396899 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212122012021 its reverse (12021022121211), we get a palindrome (23233144133232).

The spelling of 11212122012021 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-two million, twelve thousand, twenty-one".