121321120230 has 24 divisors (see below), whose sum is σ = 315434912832. Its totient is φ = 32352298704.

The previous prime is 121321120189. The next prime is 121321120231. The reversal of 121321120230 is 32021123121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321120231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674006134 + ... + 674006313.

It is an arithmetic number, because the mean of its divisors is an integer number (13143121368).

Almost surely, 2^121321120230 is an apocalyptic number.

121321120230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121321120230 is an abundant number, since it is smaller than the sum of its proper divisors (194113792602).

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

121321120230 is a wasteful number, since it uses less digits than its factorization.

121321120230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348012460 (or 1348012457 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121321120230 its reverse (32021123121), we get a palindrome (153342243351).

The spelling of 121321120230 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty thousand, two hundred thirty".