21010210002202 has 4 divisors (see below), whose sum is σ = 31515315003306. Its totient is φ = 10505105001100.

The previous prime is 21010210002193. The next prime is 21010210002239. The reversal of 21010210002202 is 20220001201012.

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., 20994439916961 + 15770085241 = 4581969^2 + 125579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5252552500549 + ... + 5252552500552.

Almost surely, 2^{21010210002202} is an apocalyptic number.

21010210002202 is a deficient number, since it is larger than the sum of its proper divisors (10505105001104).

21010210002202 is a wasteful number, since it uses less digits than its factorization.

21010210002202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505105001103.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21010210002202 its reverse (20220001201012), we get a palindrome (41230211203214).

The spelling of 21010210002202 in words is "twenty-one trillion, ten billion, two hundred ten million, two thousand, two hundred two".