121421300 has 144 divisors (see below), whose sum is σ = 354060672. Its totient is φ = 34905600.

The previous prime is 121421297. The next prime is 121421303. The reversal of 121421300 is 3124121.

It is an interprime number because it is at equal distance from previous prime (121421297) and next prime (121421303).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121421303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99494 + ... + 100706.

Almost surely, 2^121421300 is an apocalyptic number.

121421300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121421300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177030336).

121421300 is an abundant number, since it is smaller than the sum of its proper divisors (232639372).

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

121421300 is a wasteful number, since it uses less digits than its factorization.

121421300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121421300 is about 11019.1333597520. The cubic root of 121421300 is about 495.1821252758.

Adding to 121421300 its reverse (3124121), we get a palindrome (124545421).

The spelling of 121421300 in words is "one hundred twenty-one million, four hundred twenty-one thousand, three hundred".