121211011222 has 32 divisors (see below), whose sum is σ = 209908332864. Its totient is φ = 51418368000.

The previous prime is 121211011219. The next prime is 121211011231. The reversal of 121211011222 is 222110112121.

It is a junction number, because it is equal to n+sod(n) for n = 121211011196 and 121211011205.

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 in 15 ways as a sum of consecutive naturals, for example, 5862022 + ... + 5882662.

It is an arithmetic number, because the mean of its divisors is an integer number (6559635402).

Almost surely, 2^121211011222 is an apocalyptic number.

121211011222 is a deficient number, since it is larger than the sum of its proper divisors (88697321642).

121211011222 is a wasteful number, since it uses less digits than its factorization.

121211011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24904.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121211011222 its reverse (222110112121), we get a palindrome (343321123343).

The spelling of 121211011222 in words is "one hundred twenty-one billion, two hundred eleven million, eleven thousand, two hundred twenty-two".