121231101323201 has 8 divisors (see below), whose sum is σ = 122622579933480. Its totient is φ = 119847462029568.

The previous prime is 121231101323161. The next prime is 121231101323351. The reversal of 121231101323201 is 102323101132121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16429281423025 + 104801819900176 = 4053305^2 + 10237276^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121231101323201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121231101326201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959798056 + ... + 1959859913.

It is an arithmetic number, because the mean of its divisors is an integer number (15327822491685).

Almost surely, 2^{121231101323201} is an apocalyptic number.

It is an amenable number.

121231101323201 is a deficient number, since it is larger than the sum of its proper divisors (1391478610279).

121231101323201 is a wasteful number, since it uses less digits than its factorization.

121231101323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919658323.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121231101323201 its reverse (102323101132121), we get a palindrome (223554202455322).

The spelling of 121231101323201 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, one hundred one million, three hundred twenty-three thousand, two hundred one".