121220300 has 36 divisors (see below), whose sum is σ = 265529880. Its totient is φ = 48030720.

The previous prime is 121220293. The next prime is 121220303. The reversal of 121220300 is 3022121.

It is a happy number.

It is a super-2 number, since 2×121220300² = 29388722264180000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121220303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5036 + ... + 16364.

It is an arithmetic number, because the mean of its divisors is an integer number (7375830).

Almost surely, 2^121220300 is an apocalyptic number.

121220300 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 121220300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132764940).

121220300 is an abundant number, since it is smaller than the sum of its proper divisors (144309580).

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

121220300 is a wasteful number, since it uses less digits than its factorization.

121220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11450 (or 11443 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 121220300 is about 11010.0090826484. The cubic root of 121220300 is about 494.9087339815.

Adding to 121220300 its reverse (3022121), we get a palindrome (124242421).

It can be divided in two parts, 1212 and 20300, that added together give a palindrome (21512).

The spelling of 121220300 in words is "one hundred twenty-one million, two hundred twenty thousand, three hundred".