1000201122 has 28 divisors (see below), whose sum is σ = 2249426790. Its totient is φ = 333399888.

The previous prime is 1000201063. The next prime is 1000201123. The reversal of 1000201122 is 2211020001.

It can be written as a sum of positive squares in only one way, i.e., 919363041 + 80838081 = 30321^2 + 8991^2 .

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 (1000201123) 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 13 ways as a sum of consecutive naturals, for example, 341547 + ... + 344462.

Almost surely, 2^1000201122 is an apocalyptic number.

1000201122 is an abundant number, since it is smaller than the sum of its proper divisors (1249225668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000201122 is an frugal number, since it uses more digits than its factorization.

1000201122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686029 (or 686014 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000201122 is about 31625.9564598448. The cubic root of 1000201122 is about 1000.0670361727.

Adding to 1000201122 its reverse (2211020001), we get a palindrome (3211221123).

The spelling of 1000201122 in words is "one billion, two hundred one thousand, one hundred twenty-two".