121101201210220 has 384 divisors, whose sum is σ = 328812226412544. Its totient is φ = 36358848000000.

The previous prime is 121101201210083. The next prime is 121101201210239. The reversal of 121101201210220 is 22012102101121.

It is a junction number, because it is equal to n+sod(n) for n = 121101201210194 and 121101201210203.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28554867300 + ... + 28554871540.

It is an arithmetic number, because the mean of its divisors is an integer number (856281839616).

Almost surely, 2^{121101201210220} is an apocalyptic number.

121101201210220 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 121101201210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164406113206272).

121101201210220 is an abundant number, since it is smaller than the sum of its proper divisors (207711025202324).

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

121101201210220 is a wasteful number, since it uses less digits than its factorization.

121101201210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933 (or 6931 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121101201210220 its reverse (22012102101121), we get a palindrome (143113303311341).

The spelling of 121101201210220 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred one million, two hundred ten thousand, two hundred twenty".