121213432241 has 8 divisors (see below), whose sum is σ = 132455831904. Its totient is φ = 110008198720.

The previous prime is 121213432229. The next prime is 121213432243. The reversal of 121213432241 is 142234312121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121213432241 - 2²² = 121209237937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121213432241.

It is not an unprimeable number, because it can be changed into a prime (121213432243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9284711 + ... + 9297756.

It is an arithmetic number, because the mean of its divisors is an integer number (16556978988).

Almost surely, 2^121213432241 is an apocalyptic number.

121213432241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121213432241 is a deficient number, since it is larger than the sum of its proper divisors (11242399663).

121213432241 is a wasteful number, since it uses less digits than its factorization.

121213432241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18583071.

The product of its digits is 2304, while the sum is 26.

Adding to 121213432241 its reverse (142234312121), we get a palindrome (263447744362).

The spelling of 121213432241 in words is "one hundred twenty-one billion, two hundred thirteen million, four hundred thirty-two thousand, two hundred forty-one".