121222022222 has 16 divisors (see below), whose sum is σ = 207833327712. Its totient is φ = 51946258560.

The previous prime is 121222022221. The next prime is 121222022237. The reversal of 121222022222 is 222220222121.

It is a junction number, because it is equal to n+sod(n) for n = 121222022194 and 121222022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222022221) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 377183 + ... + 620250.

It is an arithmetic number, because the mean of its divisors is an integer number (12989582982).

Almost surely, 2^121222022222 is an apocalyptic number.

121222022222 is a deficient number, since it is larger than the sum of its proper divisors (86611305490).

121222022222 is an equidigital number, since it uses as much as digits as its factorization.

121222022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006123.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 121222022222 its reverse (222220222121), we get a palindrome (343442244343).

The spelling of 121222022222 in words is "one hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-two".