121231212332401 has 8 divisors (see below), whose sum is σ = 121421656908864. Its totient is φ = 121040777233200.

The previous prime is 121231212332339. The next prime is 121231212332443. The reversal of 121231212332401 is 104233212132121.

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 121231212332401 - 2²³ = 121231203943793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121231212332401.

It is not an unprimeable number, because it can be changed into a prime (121235212332401) 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, 23455251 + ... + 28153351.

It is an arithmetic number, because the mean of its divisors is an integer number (15177707113608).

Almost surely, 2^{121231212332401} is an apocalyptic number.

It is an amenable number.

121231212332401 is a deficient number, since it is larger than the sum of its proper divisors (190444576463).

121231212332401 is an equidigital number, since it uses as much as digits as its factorization.

121231212332401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738631.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 121231212332401 its reverse (104233212132121), we get a palindrome (225464424464522).

The spelling of 121231212332401 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, two hundred twelve million, three hundred thirty-two thousand, four hundred one".