1002100120202 has 4 divisors (see below), whose sum is σ = 1503150180306. Its totient is φ = 501050060100.

The previous prime is 1002100120127. The next prime is 1002100120247. The reversal of 1002100120202 is 2020210012001.

It is a happy number.

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., 557383189561 + 444716930641 = 746581^2 + 666871^2 .

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, 250525030049 + ... + 250525030052.

Almost surely, 2^{1002100120202} is an apocalyptic number.

1002100120202 is a deficient number, since it is larger than the sum of its proper divisors (501050060104).

1002100120202 is an equidigital number, since it uses as much as digits as its factorization.

1002100120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501050060103.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002100120202 its reverse (2020210012001), we get a palindrome (3022310132203).

The spelling of 1002100120202 in words is "one trillion, two billion, one hundred million, one hundred twenty thousand, two hundred two".