212121302002 has 8 divisors (see below), whose sum is σ = 318254132700. Its totient is φ = 106036591104.

The previous prime is 212121301993. The next prime is 212121302047. The reversal of 212121302002 is 200203121212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 157013270001 + 55108032001 = 396249^2 + 234751^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12018927 + ... + 12036562.

Almost surely, 2^212121302002 is an apocalyptic number.

212121302002 is a deficient number, since it is larger than the sum of its proper divisors (106132830698).

212121302002 is a wasteful number, since it uses less digits than its factorization.

212121302002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24059900.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212121302002 its reverse (200203121212), we get a palindrome (412324423214).

The spelling of 212121302002 in words is "two hundred twelve billion, one hundred twenty-one million, three hundred two thousand, two".