121103424420 has 96 divisors (see below), whose sum is σ = 370403542656. Its totient is φ = 29319705600.

The previous prime is 121103424397. The next prime is 121103424427. The reversal of 121103424420 is 24424301121.

It is not an unprimeable number, because it can be changed into a prime (121103424427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381702 + ... + 622818.

It is an arithmetic number, because the mean of its divisors is an integer number (3858370236).

Almost surely, 2^121103424420 is an apocalyptic number.

121103424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121103424420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185201771328).

121103424420 is an abundant number, since it is smaller than the sum of its proper divisors (249300118236).

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

121103424420 is a wasteful number, since it uses less digits than its factorization.

121103424420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241901 (or 241899 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 121103424420 its reverse (24424301121), we get a palindrome (145527725541).

The spelling of 121103424420 in words is "one hundred twenty-one billion, one hundred three million, four hundred twenty-four thousand, four hundred twenty".