121020121112222 has 16 divisors (see below), whose sum is σ = 191094529784400. Its totient is φ = 57322282118400.

The previous prime is 121020121112183. The next prime is 121020121112281. The reversal of 121020121112222 is 222211121020121.

It is a junction number, because it is equal to n+sod(n) for n = 121020121112194 and 121020121112203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83673779 + ... + 85107822.

It is an arithmetic number, because the mean of its divisors is an integer number (11943408111525).

Almost surely, 2^{121020121112222} is an apocalyptic number.

121020121112222 is a deficient number, since it is larger than the sum of its proper divisors (70074408672178).

121020121112222 is a wasteful number, since it uses less digits than its factorization.

121020121112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168800491.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121020121112222 its reverse (222211121020121), we get a palindrome (343231242132343).

The spelling of 121020121112222 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".