999203100212 has 24 divisors (see below), whose sum is σ = 1777332592392. Its totient is φ = 491394355200.

The previous prime is 999203100197. The next prime is 999203100271. The reversal of 999203100212 is 212001302999.

It can be written as a sum of positive squares in 4 ways, for example, as 174528430756 + 824674669456 = 417766^2 + 908116^2 .

It is a super-2 number, since 2×999203100212² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9815012 + ... + 9916292.

It is an arithmetic number, because the mean of its divisors is an integer number (74055524683).

Almost surely, 2^999203100212 is an apocalyptic number.

It is an amenable number.

999203100212 is a deficient number, since it is larger than the sum of its proper divisors (778129492180).

999203100212 is a wasteful number, since it uses less digits than its factorization.

999203100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141779 (or 141777 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 999203100212 in words is "nine hundred ninety-nine billion, two hundred three million, one hundred thousand, two hundred twelve".