122221012222 has 4 divisors (see below), whose sum is σ = 183331518336. Its totient is φ = 61110506110.

The previous prime is 122221012189. The next prime is 122221012223. The reversal of 122221012222 is 222210122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222210122221 = 73 ⋅3043974277.

It is a self number, because there is not a number n which added to its sum of digits gives 122221012222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221012223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555253054 + ... + 30555253057.

It is an arithmetic number, because the mean of its divisors is an integer number (45832879584).

Almost surely, 2^122221012222 is an apocalyptic number.

122221012222 is a deficient number, since it is larger than the sum of its proper divisors (61110506114).

122221012222 is an equidigital number, since it uses as much as digits as its factorization.

122221012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61110506113.

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

Adding to 122221012222 its reverse (222210122221), we get a palindrome (344431134443).

The spelling of 122221012222 in words is "one hundred twenty-two billion, two hundred twenty-one million, twelve thousand, two hundred twenty-two".