121001112121120 has 96 divisors (see below), whose sum is σ = 356403275738496. Its totient is φ = 37714632345600.

The previous prime is 121001112121093. The next prime is 121001112121139. The reversal of 121001112121120 is 21121211100121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121001112121094 and 121001112121103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4910747101 + ... + 4910771740.

It is an arithmetic number, because the mean of its divisors is an integer number (3712534122276).

Almost surely, 2^{121001112121120} is an apocalyptic number.

121001112121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001112121120 is an abundant number, since it is smaller than the sum of its proper divisors (235402163617376).

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

121001112121120 is a wasteful number, since it uses less digits than its factorization.

121001112121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9821518874 (or 9821518866 counting only the distinct ones).

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

Adding to 121001112121120 its reverse (21121211100121), we get a palindrome (142122323221241).

The spelling of 121001112121120 in words is "one hundred twenty-one trillion, one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twenty".