10202021001002 has 4 divisors (see below), whose sum is σ = 15303031501506. Its totient is φ = 5101010500500.

The previous prime is 10202021000981. The next prime is 10202021001013. The reversal of 10202021001002 is 20010012020201.

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., 9589309348921 + 612711652081 = 3096661^2 + 782759^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2550505250249 + ... + 2550505250252.

Almost surely, 2^{10202021001002} is an apocalyptic number.

10202021001002 is a deficient number, since it is larger than the sum of its proper divisors (5101010500504).

10202021001002 is an equidigital number, since it uses as much as digits as its factorization.

10202021001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101010500503.

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

Adding to 10202021001002 its reverse (20010012020201), we get a palindrome (30212033021203).

The spelling of 10202021001002 in words is "ten trillion, two hundred two billion, twenty-one million, one thousand, two".