121310111300220 has 36 divisors (see below), whose sum is σ = 367974004277880. Its totient is φ = 32349363013344.

The previous prime is 121310111300207. The next prime is 121310111300227. The reversal of 121310111300220 is 22003111013121.

121310111300220 is a `hidden beast` number, since 1 + 2 + 1 + 31 + 0 + 111 + 300 + 220 = 666.

121310111300220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×121310111300220² (a number of 29 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 121310111300193 and 121310111300202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310111300227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336972531210 + ... + 336972531569.

It is an arithmetic number, because the mean of its divisors is an integer number (10221500118830).

Almost surely, 2^{121310111300220} is an apocalyptic number.

121310111300220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121310111300220 is an abundant number, since it is smaller than the sum of its proper divisors (246663892977660).

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

121310111300220 is a wasteful number, since it uses less digits than its factorization.

121310111300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673945062794 (or 673945062789 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121310111300220 its reverse (22003111013121), we get a palindrome (143313222313341).

The spelling of 121310111300220 in words is "one hundred twenty-one trillion, three hundred ten billion, one hundred eleven million, three hundred thousand, two hundred twenty".