121421024 has 24 divisors (see below), whose sum is σ = 240489648. Its totient is φ = 60344320.

The previous prime is 121421023. The next prime is 121421033. The reversal of 121421024 is 420124121.

It is a junction number, because it is equal to n+sod(n) for n = 121420993 and 121421011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121421023) 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, 6017 + ... + 16704.

It is an arithmetic number, because the mean of its divisors is an integer number (10020402).

Almost surely, 2^121421024 is an apocalyptic number.

It is an amenable number.

121421024 is a deficient number, since it is larger than the sum of its proper divisors (119068624).

121421024 is a wasteful number, since it uses less digits than its factorization.

121421024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22898 (or 22890 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121421024 is about 11019.1208360740. The cubic root of 121421024 is about 495.1817500797.

Adding to 121421024 its reverse (420124121), we get a palindrome (541545145).

The spelling of 121421024 in words is "one hundred twenty-one million, four hundred twenty-one thousand, twenty-four".