121320030 has 48 divisors (see below), whose sum is σ = 315301680. Its totient is φ = 29862144.

The previous prime is 121320029. The next prime is 121320037. The reversal of 121320030 is 30023121.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121319988 and 121320015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6895 + ... + 17034.

It is an arithmetic number, because the mean of its divisors is an integer number (6568785).

Almost surely, 2^121320030 is an apocalyptic number.

121320030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121320030 is an abundant number, since it is smaller than the sum of its proper divisors (193981650).

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

121320030 is a wasteful number, since it uses less digits than its factorization.

121320030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23965 (or 23952 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 121320030 is about 11014.5372122482. The cubic root of 121320030 is about 495.0444200521.

Adding to 121320030 its reverse (30023121), we get a palindrome (151343151).

The spelling of 121320030 in words is "one hundred twenty-one million, three hundred twenty thousand, thirty".