22120012222221 has 8 divisors (see below), whose sum is σ = 29499454668544. Its totient is φ = 14743622295360.

The previous prime is 22120012222211. The next prime is 22120012222247. The reversal of 22120012222221 is 12222221002122.

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

It is not a de Polignac number, because 22120012222221 - 2⁷ = 22120012222093 is a prime.

It is a super-2 number, since 2×22120012222221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120012222211) 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 7 ways as a sum of consecutive naturals, for example, 763112956 + ... + 763141941.

It is an arithmetic number, because the mean of its divisors is an integer number (3687431833568).

Almost surely, 2^{22120012222221} is an apocalyptic number.

It is an amenable number.

22120012222221 is a deficient number, since it is larger than the sum of its proper divisors (7379442446323).

22120012222221 is a wasteful number, since it uses less digits than its factorization.

22120012222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526259731.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22120012222221 its reverse (12222221002122), we get a palindrome (34342233224343).

The spelling of 22120012222221 in words is "twenty-two trillion, one hundred twenty billion, twelve million, two hundred twenty-two thousand, two hundred twenty-one".