213303221402 has 4 divisors (see below), whose sum is σ = 319954832106. Its totient is φ = 106651610700.

The previous prime is 213303221377. The next prime is 213303221429. The reversal of 213303221402 is 204122303312.

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., 196152437881 + 17150783521 = 442891^2 + 130961^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53325805349 + ... + 53325805352.

Almost surely, 2^213303221402 is an apocalyptic number.

213303221402 is a deficient number, since it is larger than the sum of its proper divisors (106651610704).

213303221402 is a wasteful number, since it uses less digits than its factorization.

213303221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106651610703.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 213303221402 its reverse (204122303312), we get a palindrome (417425524714).

The spelling of 213303221402 in words is "two hundred thirteen billion, three hundred three million, two hundred twenty-one thousand, four hundred two".