121213230 has 32 divisors (see below), whose sum is σ = 308025504. Its totient is φ = 30422016.

The previous prime is 121213229. The next prime is 121213241. The reversal of 121213230 is 32312121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118327 + ... + 119346.

It is an arithmetic number, because the mean of its divisors is an integer number (9625797).

Almost surely, 2^121213230 is an apocalyptic number.

121213230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121213230 is an abundant number, since it is smaller than the sum of its proper divisors (186812274).

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

121213230 is a wasteful number, since it uses less digits than its factorization.

121213230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237700.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121213230 is about 11009.6880064787. The cubic root of 121213230 is about 494.8991121806.

Adding to 121213230 its reverse (32312121), we get a palindrome (153525351).

It can be divided in two parts, 12121 and 3230, that added together give a palindrome (15351).

The spelling of 121213230 in words is "one hundred twenty-one million, two hundred thirteen thousand, two hundred thirty".