12121231100241 has 4 divisors (see below), whose sum is σ = 16161641466992. Its totient is φ = 8080820733492.

The previous prime is 12121231100207. The next prime is 12121231100243. The reversal of 12121231100241 is 14200113212121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12121231100241 - 2¹³ = 12121231092049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121231100243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2020205183371 + ... + 2020205183376.

It is an arithmetic number, because the mean of its divisors is an integer number (4040410366748).

Almost surely, 2^{12121231100241} is an apocalyptic number.

It is an amenable number.

12121231100241 is a deficient number, since it is larger than the sum of its proper divisors (4040410366751).

12121231100241 is an equidigital number, since it uses as much as digits as its factorization.

12121231100241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040410366750.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12121231100241 its reverse (14200113212121), we get a palindrome (26321344312362).

The spelling of 12121231100241 in words is "twelve trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred thousand, two hundred forty-one".