121411430021 has 16 divisors (see below), whose sum is σ = 145079040000. Its totient is φ = 99342741168.

The previous prime is 121411430009. The next prime is 121411430027. The reversal of 121411430021 is 120034114121.

It is a de Polignac number, because none of the positive numbers 2^k-121411430021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121411429975 and 121411430002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121411430027) 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, 675281 + ... + 835958.

It is an arithmetic number, because the mean of its divisors is an integer number (9067440000).

Almost surely, 2^121411430021 is an apocalyptic number.

It is an amenable number.

121411430021 is a deficient number, since it is larger than the sum of its proper divisors (23667609979).

121411430021 is a wasteful number, since it uses less digits than its factorization.

121411430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511768.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121411430021 its reverse (120034114121), we get a palindrome (241445544142).

The spelling of 121411430021 in words is "one hundred twenty-one billion, four hundred eleven million, four hundred thirty thousand, twenty-one".