1001012202 has 16 divisors (see below), whose sum is σ = 2224471680.
Its totient is φ = 333670716.
The previous prime is 1001012197. The next prime is 1001012203. The reversal of 1001012202 is 2022101001.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is not an unprimeable number, because it can be changed into a prime (1001012203) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9268578 + ... + 9268685.
It is an arithmetic number, because the mean of its divisors is an integer number (139029480).
Almost surely, 21001012202 is an apocalyptic number.
1001012202 is an abundant number, since it is smaller than the sum of its proper divisors (1223459478).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1001012202 is a wasteful number, since it uses less digits than its factorization.
1001012202 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18537274 (or 18537268 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 9.
The square root of 1001012202 is about 31638.7768726922.
The cubic root of 1001012202 is about 1000.3372868914.
Adding to 1001012202 its reverse (2022101001), we get a palindrome (3023113203).
The spelling of 1001012202 in words is "one billion, one million, twelve thousand, two hundred two".