1221122022222 has 8 divisors (see below), whose sum is σ = 2442244044456. Its totient is φ = 407040674072.

The previous prime is 1221122022221. The next prime is 1221122022233. The reversal of 1221122022222 is 2222202211221.

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

1221122022222 is an admirable number.

It is a super-2 number, since 2×1221122022222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221122022221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101760168513 + ... + 101760168524.

It is an arithmetic number, because the mean of its divisors is an integer number (305280505557).

Almost surely, 2^{1221122022222} is an apocalyptic number.

1221122022222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1221122022222 is a wasteful number, since it uses less digits than its factorization.

1221122022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203520337042.

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

Adding to 1221122022222 its reverse (2222202211221), we get a palindrome (3443324233443).

The spelling of 1221122022222 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, two hundred twenty-two".