1001002011122 has 4 divisors (see below), whose sum is σ = 1501503016686. Its totient is φ = 500501005560.

The previous prime is 1001002011007. The next prime is 1001002011137. The reversal of 1001002011122 is 2211102001001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 993628182481 + 7373828641 = 996809^2 + 85871^2 .

It is a super-2 number, since 2×1001002011122² (a number of 25 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 250250502779 + ... + 250250502782.

Almost surely, 2^{1001002011122} is an apocalyptic number.

1001002011122 is a deficient number, since it is larger than the sum of its proper divisors (500501005564).

1001002011122 is an equidigital number, since it uses as much as digits as its factorization.

1001002011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500501005563.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001002011122 its reverse (2211102001001), we get a palindrome (3212104012123).

The spelling of 1001002011122 in words is "one trillion, one billion, two million, eleven thousand, one hundred twenty-two".