121012220222 has 4 divisors (see below), whose sum is σ = 181518330336. Its totient is φ = 60506110110.

The previous prime is 121012220221. The next prime is 121012220233. The reversal of 121012220222 is 222022210121.

It is a happy number.

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 121012220222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30253055054 + ... + 30253055057.

It is an arithmetic number, because the mean of its divisors is an integer number (45379582584).

Almost surely, 2^121012220222 is an apocalyptic number.

121012220222 is a deficient number, since it is larger than the sum of its proper divisors (60506110114).

121012220222 is an equidigital number, since it uses as much as digits as its factorization.

121012220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60506110113.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121012220222 its reverse (222022210121), we get a palindrome (343034430343).

The spelling of 121012220222 in words is "one hundred twenty-one billion, twelve million, two hundred twenty thousand, two hundred twenty-two".