210012201999965 has 8 divisors (see below), whose sum is σ = 252154572806328. Its totient is φ = 167916474662400.

The previous prime is 210012201999961. The next prime is 210012202000039. The reversal of 210012201999965 is 569999102210012.

It can be written as a sum of positive squares in 4 ways, for example, as 18207263398009 + 191804938601956 = 4266997^2 + 13849366^2 .

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

It is not a de Polignac number, because 210012201999965 - 2² = 210012201999961 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 210012201999965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012201999961) 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, 11660857292 + ... + 11660875301.

It is an arithmetic number, because the mean of its divisors is an integer number (31519321600791).

Almost surely, 2^{210012201999965} is an apocalyptic number.

It is an amenable number.

210012201999965 is a deficient number, since it is larger than the sum of its proper divisors (42142370806363).

210012201999965 is a wasteful number, since it uses less digits than its factorization.

210012201999965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23321734399.

The product of its (nonzero) digits is 1574640, while the sum is 56.

The spelling of 210012201999965 in words is "two hundred ten trillion, twelve billion, two hundred one million, nine hundred ninety-nine thousand, nine hundred sixty-five".