12211202222021 has 16 divisors (see below), whose sum is σ = 13415529744000. Its totient is φ = 11022631224000.

The previous prime is 12211202221993. The next prime is 12211202222053. The reversal of 12211202222021 is 12022220211221.

It is not a de Polignac number, because 12211202222021 - 2¹⁴ = 12211202205637 is a prime.

It is a super-2 number, since 2×12211202222021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211202221984 and 12211202222002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211202222081) 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, 3235496 + ... + 5906846.

It is an arithmetic number, because the mean of its divisors is an integer number (838470609000).

Almost surely, 2^{12211202222021} is an apocalyptic number.

12211202222021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12211202222021 is a deficient number, since it is larger than the sum of its proper divisors (1204327521979).

12211202222021 is a wasteful number, since it uses less digits than its factorization.

12211202222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674300.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12211202222021 its reverse (12022220211221), we get a palindrome (24233422433242).

The spelling of 12211202222021 in words is "twelve trillion, two hundred eleven billion, two hundred two million, two hundred twenty-two thousand, twenty-one".