121121112192 has 64 divisors (see below), whose sum is σ = 321792341760. Its totient is φ = 40365624320.

The previous prime is 121121112191. The next prime is 121121112263. The reversal of 121121112192 is 291211121121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (121121112191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072038 + ... + 2129690.

It is an arithmetic number, because the mean of its divisors is an integer number (5028005340).

Almost surely, 2^121121112192 is an apocalyptic number.

121121112192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121121112192 is an abundant number, since it is smaller than the sum of its proper divisors (200671229568).

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

121121112192 is an equidigital number, since it uses as much as digits as its factorization.

121121112192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63141 (or 63129 counting only the distinct ones).

The product of its digits is 144, while the sum is 24.

The spelling of 121121112192 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred ninety-two".