22002212111221 has 8 divisors (see below), whose sum is σ = 22008616242624. Its totient is φ = 21995808925440.

The previous prime is 22002212111183. The next prime is 22002212111239. The reversal of 22002212111221 is 12211121220022.

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-22002212111221 is a prime.

It is a super-2 number, since 2×22002212111221² (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 (22002212171221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47709486 + ... + 48168448.

It is an arithmetic number, because the mean of its divisors is an integer number (2751077030328).

Almost surely, 2^{22002212111221} is an apocalyptic number.

It is an amenable number.

22002212111221 is a deficient number, since it is larger than the sum of its proper divisors (6404131403).

22002212111221 is an equidigital number, since it uses as much as digits as its factorization.

22002212111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472811.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22002212111221 its reverse (12211121220022), we get a palindrome (34213333331243).

The spelling of 22002212111221 in words is "twenty-two trillion, two billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-one".