21322121222122 has 32 divisors (see below), whose sum is σ = 36748479170304. Its totient is φ = 9089076268800.

The previous prime is 21322121222119. The next prime is 21322121222123. The reversal of 21322121222122 is 22122212122312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21322121222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062529 + ... + 6616132.

It is an arithmetic number, because the mean of its divisors is an integer number (1148389974072).

Almost surely, 2^{21322121222122} is an apocalyptic number.

21322121222122 is a deficient number, since it is larger than the sum of its proper divisors (15426357948182).

21322121222122 is a wasteful number, since it uses less digits than its factorization.

21322121222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679734.

The product of its digits is 1536, while the sum is 25.

Adding to 21322121222122 its reverse (22122212122312), we get a palindrome (43444333344434).

The spelling of 21322121222122 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".