210202202121999 has 96 divisors (see below), whose sum is σ = 287707099797504. Its totient is φ = 136501750333440.

The previous prime is 210202202121979. The next prime is 210202202122027. The reversal of 210202202121999 is 999121202202012.

It is not a de Polignac number, because 210202202121999 - 2¹¹ = 210202202119951 is a prime.

It is a super-3 number, since 3×210202202121999³ (a number of 44 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 210202202121999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210202202121979) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 255409722702 + ... + 255409723524.

It is an arithmetic number, because the mean of its divisors is an integer number (2996948956224).

Almost surely, 2^{210202202121999} is an apocalyptic number.

210202202121999 is a deficient number, since it is larger than the sum of its proper divisors (77504897675505).

210202202121999 is a wasteful number, since it uses less digits than its factorization.

210202202121999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 210202202121999 in words is "two hundred ten trillion, two hundred two billion, two hundred two million, one hundred twenty-one thousand, nine hundred ninety-nine".