121443020 has 12 divisors (see below), whose sum is σ = 255030384. Its totient is φ = 48577200.

The previous prime is 121443001. The next prime is 121443031. The reversal of 121443020 is 20344121.

It is a self number, because there is not a number n which added to its sum of digits gives 121443020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3036056 + ... + 3036095.

It is an arithmetic number, because the mean of its divisors is an integer number (21252532).

Almost surely, 2^121443020 is an apocalyptic number.

121443020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121443020 is an abundant number, since it is smaller than the sum of its proper divisors (133587364).

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

121443020 is a wasteful number, since it uses less digits than its factorization.

121443020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072160 (or 6072158 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121443020 is about 11020.1188741320. The cubic root of 121443020 is about 495.2116497895.

Adding to 121443020 its reverse (20344121), we get a palindrome (141787141).

The spelling of 121443020 in words is "one hundred twenty-one million, four hundred forty-three thousand, twenty".