122221021222 has 4 divisors (see below), whose sum is σ = 183331531836. Its totient is φ = 61110510610.

The previous prime is 122221021211. The next prime is 122221021231. The reversal of 122221021222 is 222120122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222120122221 = 6949 ⋅31964329.

It is a self number, because there is not a number n which added to its sum of digits gives 122221021222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555255304 + ... + 30555255307.

It is an arithmetic number, because the mean of its divisors is an integer number (45832882959).

Almost surely, 2^122221021222 is an apocalyptic number.

122221021222 is a deficient number, since it is larger than the sum of its proper divisors (61110510614).

122221021222 is an equidigital number, since it uses as much as digits as its factorization.

122221021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61110510613.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122221021222 its reverse (222120122221), we get a palindrome (344341143443).

The spelling of 122221021222 in words is "one hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-two".