121221022000222 has 4 divisors (see below), whose sum is σ = 181831533000336. Its totient is φ = 60610511000110.

The previous prime is 121221022000207. The next prime is 121221022000231. The reversal of 121221022000222 is 222000220122121.

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

It is a super-2 number, since 2×121221022000222² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121221022000222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30305255500054 + ... + 30305255500057.

It is an arithmetic number, because the mean of its divisors is an integer number (45457883250084).

Almost surely, 2^{121221022000222} is an apocalyptic number.

121221022000222 is a deficient number, since it is larger than the sum of its proper divisors (60610511000114).

121221022000222 is an equidigital number, since it uses as much as digits as its factorization.

121221022000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60610511000113.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 121221022000222 its reverse (222000220122121), we get a palindrome (343221242122343).

The spelling of 121221022000222 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty-two", and thus it is an aban number.