121144520001 has 8 divisors (see below), whose sum is σ = 161529435360. Its totient is φ = 80761308992.

The previous prime is 121144519981. The next prime is 121144520039. The reversal of 121144520001 is 100025441121.

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 121144520001 - 2²² = 121140325697 is a prime.

It is a super-3 number, since 3×121144520001³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121144520001.

It is not an unprimeable number, because it can be changed into a prime (121144520041) 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, 249816 + ... + 551993.

It is an arithmetic number, because the mean of its divisors is an integer number (20191179420).

Almost surely, 2^121144520001 is an apocalyptic number.

It is an amenable number.

121144520001 is a deficient number, since it is larger than the sum of its proper divisors (40384915359).

121144520001 is an equidigital number, since it uses as much as digits as its factorization.

121144520001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852175.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 121144520001 its reverse (100025441121), we get a palindrome (221169961122).

The spelling of 121144520001 in words is "one hundred twenty-one billion, one hundred forty-four million, five hundred twenty thousand, one".