1001121210002 has 8 divisors (see below), whose sum is σ = 1530015434316. Its totient is φ = 491116065232.

The previous prime is 1001121209999. The next prime is 1001121210007. The reversal of 1001121210002 is 2000121211001.

It can be written as a sum of positive squares in 2 ways, for example, as 983609716441 + 17511493561 = 991771^2 + 132331^2 .

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 (1001121210007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4722269753 + ... + 4722269964.

Almost surely, 2^{1001121210002} is an apocalyptic number.

1001121210002 is a deficient number, since it is larger than the sum of its proper divisors (528894224314).

1001121210002 is an equidigital number, since it uses as much as digits as its factorization.

1001121210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444539772.

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

Adding to 1001121210002 its reverse (2000121211001), we get a palindrome (3001242421003).

Subtracting 1001121210002 from its reverse (2000121211001), we obtain a palindrome (999000000999).

The spelling of 1001121210002 in words is "one trillion, one billion, one hundred twenty-one million, two hundred ten thousand, two".