21222303131 has 8 divisors (see below), whose sum is σ = 21550478400. Its totient is φ = 20894464008.

The previous prime is 21222303121. The next prime is 21222303133. The reversal of 21222303131 is 13130322212.

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

It is a cyclic number.

It is not a de Polignac number, because 21222303131 - 2³⁴ = 4042433947 is a prime.

It is a super-2 number, since 2×21222303131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222303133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44720 + ... + 210818.

It is an arithmetic number, because the mean of its divisors is an integer number (2693809800).

Almost surely, 2^21222303131 is an apocalyptic number.

21222303131 is a deficient number, since it is larger than the sum of its proper divisors (328175269).

21222303131 is a wasteful number, since it uses less digits than its factorization.

21222303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168073.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21222303131 its reverse (13130322212), we get a palindrome (34352625343).

The spelling of 21222303131 in words is "twenty-one billion, two hundred twenty-two million, three hundred three thousand, one hundred thirty-one".