21022131220234 has 8 divisors (see below), whose sum is σ = 31533773248548. Its totient is φ = 10510873470720.

The previous prime is 21022131220229. The next prime is 21022131220291. The reversal of 21022131220234 is 43202213122012.

It can be written as a sum of positive squares in 2 ways, for example, as 20751988039225 + 270143181009 = 4555435^2 + 519753^2 .

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

It is a super-2 number, since 2×21022131220234² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21022131220199 and 21022131220208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95932897 + ... + 96151780.

Almost surely, 2^{21022131220234} is an apocalyptic number.

21022131220234 is a deficient number, since it is larger than the sum of its proper divisors (10511642028314).

21022131220234 is a wasteful number, since it uses less digits than its factorization.

21022131220234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192139400.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21022131220234 its reverse (43202213122012), we get a palindrome (64224344342246).

The spelling of 21022131220234 in words is "twenty-one trillion, twenty-two billion, one hundred thirty-one million, two hundred twenty thousand, two hundred thirty-four".