121003420124 has 12 divisors (see below), whose sum is σ = 211771302624. Its totient is φ = 60497333664.

The previous prime is 121003420117. The next prime is 121003420127. The reversal of 121003420124 is 421024300121.

It is a junction number, because it is equal to n+sod(n) for n = 121003420096 and 121003420105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121003420127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031492 + ... + 1142795.

It is an arithmetic number, because the mean of its divisors is an integer number (17647608552).

Almost surely, 2^121003420124 is an apocalyptic number.

It is an amenable number.

121003420124 is a deficient number, since it is larger than the sum of its proper divisors (90767882500).

121003420124 is a wasteful number, since it uses less digits than its factorization.

121003420124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188204 (or 2188202 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121003420124 its reverse (421024300121), we get a palindrome (542027720245).

The spelling of 121003420124 in words is "one hundred twenty-one billion, three million, four hundred twenty thousand, one hundred twenty-four".