121000201212220 has 96 divisors (see below), whose sum is σ = 279631997116416. Its totient is φ = 43614732268800.

The previous prime is 121000201212167. The next prime is 121000201212221. The reversal of 121000201212220 is 22212102000121.

It is a happy number.

121000201212220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121000201212194 and 121000201212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000201212221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29448430 + ... + 33304810.

It is an arithmetic number, because the mean of its divisors is an integer number (2912833303296).

Almost surely, 2^{121000201212220} is an apocalyptic number.

121000201212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121000201212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139815998558208).

121000201212220 is an abundant number, since it is smaller than the sum of its proper divisors (158631795904196).

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

121000201212220 is a wasteful number, since it uses less digits than its factorization.

121000201212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857651 (or 3857649 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121000201212220 its reverse (22212102000121), we get a palindrome (143212303212341).

The spelling of 121000201212220 in words is "one hundred twenty-one trillion, two hundred one million, two hundred twelve thousand, two hundred twenty".