121010001120 has 144 divisors (see below), whose sum is σ = 437237695440. Its totient is φ = 30371131392.

The previous prime is 121010001089. The next prime is 121010001121. The reversal of 121010001120 is 21100010121.

It is a happy number.

121010001120 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 (144).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010001121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2447130 + ... + 2496089.

It is an arithmetic number, because the mean of its divisors is an integer number (3036372885).

Almost surely, 2^121010001120 is an apocalyptic number.

121010001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010001120 is an abundant number, since it is smaller than the sum of its proper divisors (316227694320).

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

121010001120 is a wasteful number, since it uses less digits than its factorization.

121010001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943257 (or 4943246 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121010001120 its reverse (21100010121), we get a palindrome (142110011241).

Subtracting from 121010001120 its reverse (21100010121), we obtain a palindrome (99909990999).

It can be divided in two parts, 121010001 and 120, that added together give a palindrome (121010121).

The spelling of 121010001120 in words is "one hundred twenty-one billion, ten million, one thousand, one hundred twenty".