121220221022110 has 32 divisors (see below), whose sum is σ = 249371065605312. Its totient is φ = 41560593004800.

The previous prime is 121220221022107. The next prime is 121220221022111. The reversal of 121220221022110 is 11220122022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220221022111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8338617 + ... + 17662756.

It is an arithmetic number, because the mean of its divisors is an integer number (7792845800166).

Almost surely, 2^{121220221022110} is an apocalyptic number.

121220221022110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220221022110 is an abundant number, since it is smaller than the sum of its proper divisors (128150844583202).

121220221022110 is a wasteful number, since it uses less digits than its factorization.

121220221022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26067988.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121220221022110 its reverse (11220122022121), we get a palindrome (132440343044231).

The spelling of 121220221022110 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-one million, twenty-two thousand, one hundred ten".