1022121221222 has 8 divisors (see below), whose sum is σ = 1565802722016. Its totient is φ = 500186980552.

The previous prime is 1022121221221. The next prime is 1022121221273. The reversal of 1022121221222 is 2221221212201.

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 = 1022121221194 and 1022121221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022121221221) 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 3 ways as a sum of consecutive naturals, for example, 5436814913 + ... + 5436815100.

It is an arithmetic number, because the mean of its divisors is an integer number (195725340252).

Almost surely, 2^{1022121221222} is an apocalyptic number.

1022121221222 is a deficient number, since it is larger than the sum of its proper divisors (543681500794).

1022121221222 is a wasteful number, since it uses less digits than its factorization.

1022121221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10873630062.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1022121221222 its reverse (2221221212201), we get a palindrome (3243342433423).

The spelling of 1022121221222 in words is "one trillion, twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".