213021010322 has 16 divisors (see below), whose sum is σ = 342128924280. Its totient is φ = 99118829568.

The previous prime is 213021010303. The next prime is 213021010343. The reversal of 213021010322 is 223010120312.

It can be written as a sum of positive squares in 4 ways, for example, as 183167736361 + 29853273961 = 427981^2 + 172781^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 213021010322.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35195423 + ... + 35201474.

Almost surely, 2^213021010322 is an apocalyptic number.

213021010322 is a deficient number, since it is larger than the sum of its proper divisors (129107913958).

213021010322 is a wasteful number, since it uses less digits than its factorization.

213021010322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70397005.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213021010322 its reverse (223010120312), we get a palindrome (436031130634).

The spelling of 213021010322 in words is "two hundred thirteen billion, twenty-one million, ten thousand, three hundred twenty-two".