121112021222 has 4 divisors (see below), whose sum is σ = 181668031836. Its totient is φ = 60556010610.

The previous prime is 121112021213. The next prime is 121112021269. The reversal of 121112021222 is 222120211121.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121112021222.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30278005304 + ... + 30278005307.

It is an arithmetic number, because the mean of its divisors is an integer number (45417007959).

Almost surely, 2^121112021222 is an apocalyptic number.

121112021222 is a deficient number, since it is larger than the sum of its proper divisors (60556010614).

121112021222 is an equidigital number, since it uses as much as digits as its factorization.

121112021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60556010613.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121112021222 its reverse (222120211121), we get a palindrome (343232232343).

The spelling of 121112021222 in words is "one hundred twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred twenty-two".