21002202012010 has 8 divisors (see below), whose sum is σ = 37803963621636. Its totient is φ = 8400880804800.

The previous prime is 21002202011983. The next prime is 21002202012031. The reversal of 21002202012010 is 1021020220012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20901730129281 + 100471882729 = 4571841^2 + 316973^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050110100591 + ... + 1050110100610.

Almost surely, 2^{21002202012010} is an apocalyptic number.

21002202012010 is a deficient number, since it is larger than the sum of its proper divisors (16801761609626).

21002202012010 is a wasteful number, since it uses less digits than its factorization.

21002202012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100220201208.

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

Adding to 21002202012010 its reverse (1021020220012), we get a palindrome (22023222232022).

The spelling of 21002202012010 in words is "twenty-one trillion, two billion, two hundred two million, twelve thousand, ten".