121102020216 has 128 divisors (see below), whose sum is σ = 363761280000. Its totient is φ = 37184380416.

The previous prime is 121102020209. The next prime is 121102020217. The reversal of 121102020216 is 612020201121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102020217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178266 + ... + 523433.

It is an arithmetic number, because the mean of its divisors is an integer number (2841885000).

Almost surely, 2^121102020216 is an apocalyptic number.

It is an amenable number.

121102020216 is an abundant number, since it is smaller than the sum of its proper divisors (242659259784).

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

121102020216 is a wasteful number, since it uses less digits than its factorization.

121102020216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701778 (or 701768 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121102020216 its reverse (612020201121), we get a palindrome (733122221337).

The spelling of 121102020216 in words is "one hundred twenty-one billion, one hundred two million, twenty thousand, two hundred sixteen".