21222016303435 has 16 divisors (see below), whose sum is σ = 25816011840000. Its totient is φ = 16745005401696.

The previous prime is 21222016303399. The next prime is 21222016303459. The reversal of 21222016303435 is 53430361022212.

It is a cyclic number.

It is not a de Polignac number, because 21222016303435 - 2¹³ = 21222016295243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222016303435.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27992685 + ... + 28740814.

It is an arithmetic number, because the mean of its divisors is an integer number (1613500740000).

Almost surely, 2^{21222016303435} is an apocalyptic number.

21222016303435 is a deficient number, since it is larger than the sum of its proper divisors (4593995536565).

21222016303435 is an equidigital number, since it uses as much as digits as its factorization.

21222016303435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56734530.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 21222016303435 its reverse (53430361022212), we get a palindrome (74652377325647).

The spelling of 21222016303435 in words is "twenty-one trillion, two hundred twenty-two billion, sixteen million, three hundred three thousand, four hundred thirty-five".