22121021211101 has 4 divisors (see below), whose sum is σ = 22121060100000. Its totient is φ = 22120982322204.

The previous prime is 22121021211083. The next prime is 22121021211167. The reversal of 22121021211101 is 10111212012122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22121021211101 - 2¹⁰ = 22121021210077 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 22121021211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121021211701) 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 3 ways as a sum of consecutive naturals, for example, 18578351 + ... + 19733148.

It is an arithmetic number, because the mean of its divisors is an integer number (5530265025000).

Almost surely, 2^{22121021211101} is an apocalyptic number.

It is an amenable number.

22121021211101 is a deficient number, since it is larger than the sum of its proper divisors (38888899).

22121021211101 is an equidigital number, since it uses as much as digits as its factorization.

22121021211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38888898.

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

Adding to 22121021211101 its reverse (10111212012122), we get a palindrome (32232233223223).

The spelling of 22121021211101 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred one".