121024400 has 60 divisors (see below), whose sum is σ = 332306112. Its totient is φ = 41493120.

The previous prime is 121024391. The next prime is 121024429. The reversal of 121024400 is 4420121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18812 + ... + 24411.

Almost surely, 2^121024400 is an apocalyptic number.

121024400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121024400 is an abundant number, since it is smaller than the sum of its proper divisors (211281712).

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

121024400 is a wasteful number, since it uses less digits than its factorization.

121024400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43248 (or 43237 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 121024400 is about 11001.1090350019. The cubic root of 121024400 is about 494.6419885184.

Adding to 121024400 its reverse (4420121), we get a palindrome (125444521).

The spelling of 121024400 in words is "one hundred twenty-one million, twenty-four thousand, four hundred".