1001111121002 has 8 divisors (see below), whose sum is σ = 1553448291300. Its totient is φ = 483295023904.

The previous prime is 1001111121001. The next prime is 1001111121013. The reversal of 1001111121002 is 2001211111001.

It can be written as a sum of positive squares in 2 ways, for example, as 907940273881 + 93170847121 = 952859^2 + 305239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1001111121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8630268227 + ... + 8630268342.

Almost surely, 2^{1001111121002} is an apocalyptic number.

1001111121002 is a deficient number, since it is larger than the sum of its proper divisors (552337170298).

1001111121002 is a wasteful number, since it uses less digits than its factorization.

1001111121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17260536600.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001111121002 its reverse (2001211111001), we get a palindrome (3002322232003).

The spelling of 1001111121002 in words is "one trillion, one billion, one hundred eleven million, one hundred twenty-one thousand, two".