121321230 has 16 divisors (see below), whose sum is σ = 291171024. Its totient is φ = 32352320.

The previous prime is 121321229. The next prime is 121321237. The reversal of 121321230 is 32123121.

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 not an unprimeable number, because it can be changed into a prime (121321237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021991 + ... + 2022050.

It is an arithmetic number, because the mean of its divisors is an integer number (18198189).

Almost surely, 2^121321230 is an apocalyptic number.

121321230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121321230 is an abundant number, since it is smaller than the sum of its proper divisors (169849794).

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

121321230 is a wasteful number, since it uses less digits than its factorization.

121321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044051.

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

The square root of 121321230 is about 11014.5916855778. The cubic root of 121321230 is about 495.0460522402.

Adding to 121321230 its reverse (32123121), we get a palindrome (153444351).

The spelling of 121321230 in words is "one hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty".