121104121124 has 18 divisors (see below), whose sum is σ = 246533389830. Its totient is φ = 51901766112.

The previous prime is 121104121123. The next prime is 121104121169. The reversal of 121104121124 is 421121401121.

It can be written as a sum of positive squares in only one way, i.e., 93044521024 + 28059600100 = 305032^2 + 167510^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121104121096 and 121104121105.

It is not an unprimeable number, because it can be changed into a prime (121104121123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308938889 + ... + 308939280.

It is an arithmetic number, because the mean of its divisors is an integer number (13696299435).

Almost surely, 2^121104121124 is an apocalyptic number.

121104121124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121104121124 is an abundant number, since it is smaller than the sum of its proper divisors (125429268706).

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

121104121124 is a wasteful number, since it uses less digits than its factorization.

121104121124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617878187 (or 617878178 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121104121124 its reverse (421121401121), we get a palindrome (542225522245).

The spelling of 121104121124 in words is "one hundred twenty-one billion, one hundred four million, one hundred twenty-one thousand, one hundred twenty-four".