145517212102001 has 8 divisors (see below), whose sum is σ = 150538666098600. Its totient is φ = 140495999378560.

The previous prime is 145517212101997. The next prime is 145517212102007. The reversal of 145517212102001 is 100201212715541.

It can be written as a sum of positive squares in 4 ways, for example, as 58274887172401 + 87242324929600 = 7633799^2 + 9340360^2 .

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 145517212102001 - 2² = 145517212101997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145517212102007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59090810 + ... + 61504131.

It is an arithmetic number, because the mean of its divisors is an integer number (18817333262325).

Almost surely, 2^{145517212102001} is an apocalyptic number.

It is an amenable number.

145517212102001 is a deficient number, since it is larger than the sum of its proper divisors (5021453996599).

145517212102001 is a wasteful number, since it uses less digits than its factorization.

145517212102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120636579.

The product of its (nonzero) digits is 5600, while the sum is 32.

Adding to 145517212102001 its reverse (100201212715541), we get a palindrome (245718424817542).

The spelling of 145517212102001 in words is "one hundred forty-five trillion, five hundred seventeen billion, two hundred twelve million, one hundred two thousand, one".