1001012021122 has 16 divisors (see below), whose sum is σ = 1599969016440. Its totient is φ = 468064067328.

The previous prime is 1001012021089. The next prime is 1001012021167. The reversal of 1001012021122 is 2211202101001.

It can be written as a sum of positive squares in 4 ways, for example, as 988093652841 + 12918368281 = 994029^2 + 113659^2 .

It is an unprimeable number.

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, 93757497 + ... + 93768172.

Almost surely, 2^{1001012021122} is an apocalyptic number.

1001012021122 is a deficient number, since it is larger than the sum of its proper divisors (598956995318).

1001012021122 is a wasteful number, since it uses less digits than its factorization.

1001012021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187525845.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1001012021122 its reverse (2211202101001), we get a palindrome (3212214122123).

The spelling of 1001012021122 in words is "one trillion, one billion, twelve million, twenty-one thousand, one hundred twenty-two".