1001002101202 has 4 divisors (see below), whose sum is σ = 1501503151806. Its totient is φ = 500501050600.

The previous prime is 1001002101139. The next prime is 1001002101221. The reversal of 1001002101202 is 2021012001001.

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., 961480263601 + 39521837601 = 980551^2 + 198801^2 .

It is a super-2 number, since 2×1001002101202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250250525299 + ... + 250250525302.

Almost surely, 2^{1001002101202} is an apocalyptic number.

1001002101202 is a deficient number, since it is larger than the sum of its proper divisors (500501050604).

1001002101202 is an equidigital number, since it uses as much as digits as its factorization.

1001002101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500501050603.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001002101202 its reverse (2021012001001), we get a palindrome (3022014102203).

The spelling of 1001002101202 in words is "one trillion, one billion, two million, one hundred one thousand, two hundred two".