1222212022122 has 256 divisors, whose sum is σ = 3143747174400. Its totient is φ = 308128665600.

The previous prime is 1222212022063. The next prime is 1222212022211. The reversal of 1222212022122 is 2212202122221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 667509747 + ... + 667511577.

It is an arithmetic number, because the mean of its divisors is an integer number (12280262400).

Almost surely, 2^{1222212022122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222212022122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571873587200).

1222212022122 is an abundant number, since it is smaller than the sum of its proper divisors (1921535152278).

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

1222212022122 is a wasteful number, since it uses less digits than its factorization.

1222212022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1222212022122 its reverse (2212202122221), we get a palindrome (3434414144343).

The spelling of 1222212022122 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, twenty-two thousand, one hundred twenty-two".