12121404004120 has 64 divisors (see below), whose sum is σ = 27311685468480. Its totient is φ = 4841714397696.

The previous prime is 12121404004103. The next prime is 12121404004123. The reversal of 12121404004120 is 2140040412121.

It is a junction number, because it is equal to n+sod(n) for n = 12121404004091 and 12121404004100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121404004123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229732782 + ... + 229785538.

It is an arithmetic number, because the mean of its divisors is an integer number (426745085445).

Almost surely, 2^{12121404004120} is an apocalyptic number.

12121404004120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121404004120 is an abundant number, since it is smaller than the sum of its proper divisors (15190281464360).

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

12121404004120 is a wasteful number, since it uses less digits than its factorization.

12121404004120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60772 (or 60768 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12121404004120 its reverse (2140040412121), we get a palindrome (14261444416241).

The spelling of 12121404004120 in words is "twelve trillion, one hundred twenty-one billion, four hundred four million, four thousand, one hundred twenty".