121201100222 has 4 divisors (see below), whose sum is σ = 181801650336. Its totient is φ = 60600550110.

The previous prime is 121201100147. The next prime is 121201100227. The reversal of 121201100222 is 222001102121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222001102121 = 18443 ⋅12037147.

It is a junction number, because it is equal to n+sod(n) for n = 121201100197 and 121201100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201100227) 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 as a sum of consecutive naturals, namely, 30300275054 + ... + 30300275057.

It is an arithmetic number, because the mean of its divisors is an integer number (45450412584).

Almost surely, 2^121201100222 is an apocalyptic number.

121201100222 is a deficient number, since it is larger than the sum of its proper divisors (60600550114).

121201100222 is an equidigital number, since it uses as much as digits as its factorization.

121201100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60600550113.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121201100222 its reverse (222001102121), we get a palindrome (343202202343).

The spelling of 121201100222 in words is "one hundred twenty-one billion, two hundred one million, one hundred thousand, two hundred twenty-two".