121231212230 has 16 divisors (see below), whose sum is σ = 218689544304. Its totient is φ = 48387293280.

The previous prime is 121231212227. The next prime is 121231212259. The reversal of 121231212230 is 32212132121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13144112 + ... + 13153331.

It is an arithmetic number, because the mean of its divisors is an integer number (13668096519).

Almost surely, 2^121231212230 is an apocalyptic number.

121231212230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121231212230 is a deficient number, since it is larger than the sum of its proper divisors (97458332074).

121231212230 is a wasteful number, since it uses less digits than its factorization.

121231212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26297911.

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

Adding to 121231212230 its reverse (32212132121), we get a palindrome (153443344351).

The spelling of 121231212230 in words is "one hundred twenty-one billion, two hundred thirty-one million, two hundred twelve thousand, two hundred thirty".