21222012130222 has 8 divisors (see below), whose sum is σ = 31833790346736. Its totient is φ = 10610748681312.

The previous prime is 21222012130213. The next prime is 21222012130351. The reversal of 21222012130222 is 22203121022212.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21222012130193 and 21222012130202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128588818 + ... + 128753749.

It is an arithmetic number, because the mean of its divisors is an integer number (3979223793342).

Almost surely, 2^{21222012130222} is an apocalyptic number.

21222012130222 is a deficient number, since it is larger than the sum of its proper divisors (10611778216514).

21222012130222 is a wasteful number, since it uses less digits than its factorization.

21222012130222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257383802.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21222012130222 its reverse (22203121022212), we get a palindrome (43425133152434).

The spelling of 21222012130222 in words is "twenty-one trillion, two hundred twenty-two billion, twelve million, one hundred thirty thousand, two hundred twenty-two".