121221020200222 has 16 divisors (see below), whose sum is σ = 188102023927200. Its totient is φ = 58520355354720.

The previous prime is 121221020200211. The next prime is 121221020200237. The reversal of 121221020200222 is 222002020122121.

It is a self number, because there is not a number n which added to its sum of digits gives 121221020200222.

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 in 7 ways as a sum of consecutive naturals, for example, 25173847 + ... + 29600077.

It is an arithmetic number, because the mean of its divisors is an integer number (11756376495450).

Almost surely, 2^{121221020200222} is an apocalyptic number.

121221020200222 is a deficient number, since it is larger than the sum of its proper divisors (66881003726978).

121221020200222 is a wasteful number, since it uses less digits than its factorization.

121221020200222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898451.

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

Adding to 121221020200222 its reverse (222002020122121), we get a palindrome (343223040322343).

The spelling of 121221020200222 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty million, two hundred thousand, two hundred twenty-two".