121220021102202 has 96 divisors (see below), whose sum is σ = 294364011090240. Its totient is φ = 35728379631360.

The previous prime is 121220021102197. The next prime is 121220021102203. The reversal of 121220021102202 is 202201120022121.

It is a happy number.

121220021102202 is a `hidden beast` number, since 1 + 212 + 20 + 0 + 211 + 0 + 220 + 2 = 666.

121220021102202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (121220021102203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18716118 + ... + 24346110.

It is an arithmetic number, because the mean of its divisors is an integer number (3066291782190).

Almost surely, 2^{121220021102202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121220021102202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147182005545120).

121220021102202 is an abundant number, since it is smaller than the sum of its proper divisors (173143989988038).

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

121220021102202 is a wasteful number, since it uses less digits than its factorization.

121220021102202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632988 (or 5632985 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121220021102202 its reverse (202201120022121), we get a palindrome (323421141124323).

The spelling of 121220021102202 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty-one million, one hundred two thousand, two hundred two".