121122212202222 has 192 divisors, whose sum is σ = 313023252729600. Its totient is φ = 30887973043200.

The previous prime is 121122212202209. The next prime is 121122212202239. The reversal of 121122212202222 is 222202212221121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121122212202192 and 121122212202201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107347654 + ... + 108470102.

It is an arithmetic number, because the mean of its divisors is an integer number (1630329441300).

Almost surely, 2^{121122212202222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122212202222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156511626364800).

121122212202222 is an abundant number, since it is smaller than the sum of its proper divisors (191901040527378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121122212202222 is a wasteful number, since it uses less digits than its factorization.

121122212202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123087 (or 1123080 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 121122212202222 its reverse (222202212221121), we get a palindrome (343324424423343).

The spelling of 121122212202222 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twelve million, two hundred two thousand, two hundred twenty-two".