1001021121202 has 8 divisors (see below), whose sum is σ = 1501541296812. Its totient is φ = 500507355600.

The previous prime is 1001021121193. The next prime is 1001021121203. The reversal of 1001021121202 is 2021211201001.

It can be written as a sum of positive squares in 2 ways, for example, as 927005021721 + 74016099481 = 962811^2 + 272059^2 .

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 (1001021121203) 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, 1190949 + ... + 1849432.

Almost surely, 2^{1001021121202} is an apocalyptic number.

1001021121202 is a deficient number, since it is larger than the sum of its proper divisors (500520175610).

1001021121202 is a wasteful number, since it uses less digits than its factorization.

1001021121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205004.

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

Adding to 1001021121202 its reverse (2021211201001), we get a palindrome (3022232322203).

The spelling of 1001021121202 in words is "one trillion, one billion, twenty-one million, one hundred twenty-one thousand, two hundred two".