111210121200020 has 24 divisors (see below), whose sum is σ = 233772712693800. Its totient is φ = 44439961208832.

The previous prime is 111210121199971. The next prime is 111210121200047. The reversal of 111210121200020 is 20002121012111.

111210121200020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 211633121296 + 110998488078724 = 460036^2 + 10535582^2 .

It is a super-3 number, since 3×111210121200020³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111210121199968 and 111210121200004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755433765 + ... + 2755474124.

It is an arithmetic number, because the mean of its divisors is an integer number (9740529695575).

Almost surely, 2^{111210121200020} is an apocalyptic number.

111210121200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210121200020 is an abundant number, since it is smaller than the sum of its proper divisors (122562591493780).

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

111210121200020 is a wasteful number, since it uses less digits than its factorization.

111210121200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510908907 (or 5510908905 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111210121200020 its reverse (20002121012111), we get a palindrome (131212242212131).

The spelling of 111210121200020 in words is "one hundred eleven trillion, two hundred ten billion, one hundred twenty-one million, two hundred thousand, twenty".