121221110222202 has 16 divisors (see below), whose sum is σ = 242665258378752. Its totient is φ = 40369863751680.

The previous prime is 121221110222171. The next prime is 121221110222203. The reversal of 121221110222202 is 202222011122121.

It is not an unprimeable number, because it can be changed into a prime (121221110222203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9293240199 + ... + 9293253242.

It is an arithmetic number, because the mean of its divisors is an integer number (15166578648672).

Almost surely, 2^{121221110222202} is an apocalyptic number.

121221110222202 is an abundant number, since it is smaller than the sum of its proper divisors (121444148156550).

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

121221110222202 is a wasteful number, since it uses less digits than its factorization.

121221110222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18586494533.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121221110222202 its reverse (202222011122121), we get a palindrome (323443121344323).

The spelling of 121221110222202 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, two hundred two".