22220210021221 has 8 divisors (see below), whose sum is σ = 23960175120000. Its totient is φ = 20537292958560.

The previous prime is 22220210021173. The next prime is 22220210021239. The reversal of 22220210021221 is 12212001202222.

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

It is a cyclic number.

It is not a de Polignac number, because 22220210021221 - 2⁹ = 22220210020709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220210027221) 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, 14262008221 + ... + 14262009778.

It is an arithmetic number, because the mean of its divisors is an integer number (2995021890000).

Almost surely, 2^{22220210021221} is an apocalyptic number.

It is an amenable number.

22220210021221 is a deficient number, since it is larger than the sum of its proper divisors (1739965098779).

22220210021221 is a wasteful number, since it uses less digits than its factorization.

22220210021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28524018059.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22220210021221 its reverse (12212001202222), we get a palindrome (34432211223443).

The spelling of 22220210021221 in words is "twenty-two trillion, two hundred twenty billion, two hundred ten million, twenty-one thousand, two hundred twenty-one".