121121000020122 has 48 divisors (see below), whose sum is σ = 257387489576640. Its totient is φ = 37990217047552.

The previous prime is 121121000020121. The next prime is 121121000020151. The reversal of 121121000020122 is 221020000121121.

It is not an unprimeable number, because it can be changed into a prime (121121000020121) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 107622 + ... + 15564497.

It is an arithmetic number, because the mean of its divisors is an integer number (5362239366180).

Almost surely, 2^{121121000020122} is an apocalyptic number.

121121000020122 is an abundant number, since it is smaller than the sum of its proper divisors (136266489556518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121121000020122 is a wasteful number, since it uses less digits than its factorization.

121121000020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15676615 (or 15676598 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121121000020122 its reverse (221020000121121), we get a palindrome (342141000141243).

The spelling of 121121000020122 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty thousand, one hundred twenty-two".