22212212021021 has 16 divisors (see below), whose sum is σ = 24251395811328. Its totient is φ = 20176345176000.

The previous prime is 22212212020981. The next prime is 22212212021099. The reversal of 22212212021021 is 12012021221222.

It is a cyclic number.

It is not a de Polignac number, because 22212212021021 - 2³⁴ = 22195032151837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22212212020984 and 22212212021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212212024021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443802020 + ... + 443852066.

It is an arithmetic number, because the mean of its divisors is an integer number (1515712238208).

Almost surely, 2^{22212212021021} is an apocalyptic number.

It is an amenable number.

22212212021021 is a deficient number, since it is larger than the sum of its proper divisors (2039183790307).

22212212021021 is a wasteful number, since it uses less digits than its factorization.

22212212021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82372.

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

Adding to 22212212021021 its reverse (12012021221222), we get a palindrome (34224233242243).

The spelling of 22212212021021 in words is "twenty-two trillion, two hundred twelve billion, two hundred twelve million, twenty-one thousand, twenty-one".