121212123230 has 16 divisors (see below), whose sum is σ = 238016533104. Its totient is φ = 44077135680.

The previous prime is 121212123211. The next prime is 121212123287. The reversal of 121212123230 is 32321212121.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550964087 + ... + 550964306.

It is an arithmetic number, because the mean of its divisors is an integer number (14876033319).

Almost surely, 2^121212123230 is an apocalyptic number.

121212123230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121212123230 is a deficient number, since it is larger than the sum of its proper divisors (116804409874).

121212123230 is a wasteful number, since it uses less digits than its factorization.

121212123230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101928411.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121212123230 its reverse (32321212121), we get a palindrome (153533335351).

It can be divided in two parts, 121212 and 123230, that added together give a palindrome (244442).

The spelling of 121212123230 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twenty-three thousand, two hundred thirty".