121223213232 has 40 divisors (see below), whose sum is σ = 341629056960. Its totient is φ = 36734306880.

The previous prime is 121223213231. The next prime is 121223213269. The reversal of 121223213232 is 232312322121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (121223213231) by changing a digit.

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, 114794182 + ... + 114795237.

It is an arithmetic number, because the mean of its divisors is an integer number (8540726424).

Almost surely, 2^121223213232 is an apocalyptic number.

121223213232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121223213232 is an abundant number, since it is smaller than the sum of its proper divisors (220405843728).

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

121223213232 is a wasteful number, since it uses less digits than its factorization.

121223213232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229589441 (or 229589435 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 121223213232 its reverse (232312322121), we get a palindrome (353535535353).

The spelling of 121223213232 in words is "one hundred twenty-one billion, two hundred twenty-three million, two hundred thirteen thousand, two hundred thirty-two".