22012122011021 has 8 divisors (see below), whose sum is σ = 22016349495264. Its totient is φ = 22007894792400.

The previous prime is 22012122010943. The next prime is 22012122011059. The reversal of 22012122011021 is 12011022121022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012122011021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012122011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252235631 + ... + 252322883.

It is an arithmetic number, because the mean of its divisors is an integer number (2752043686908).

Almost surely, 2^{22012122011021} is an apocalyptic number.

It is an amenable number.

22012122011021 is a deficient number, since it is larger than the sum of its proper divisors (4227484243).

22012122011021 is an equidigital number, since it uses as much as digits as its factorization.

22012122011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132811.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22012122011021 its reverse (12011022121022), we get a palindrome (34023144132043).

The spelling of 22012122011021 in words is "twenty-two trillion, twelve billion, one hundred twenty-two million, eleven thousand, twenty-one".