21833353522 has 16 divisors (see below), whose sum is σ = 32969633112. Its totient is φ = 10843522560.

The previous prime is 21833353519. The next prime is 21833353523. The reversal of 21833353522 is 22535333812.

It can be written as a sum of positive squares in 4 ways, for example, as 21833313121 + 40401 = 147761^2 + 201^2 .

It is not an unprimeable number, because it can be changed into a prime (21833353523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099522 + ... + 1119202.

Almost surely, 2^21833353522 is an apocalyptic number.

21833353522 is a deficient number, since it is larger than the sum of its proper divisors (11136279590).

21833353522 is a wasteful number, since it uses less digits than its factorization.

21833353522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23373.

The product of its digits is 129600, while the sum is 37.

The spelling of 21833353522 in words is "twenty-one billion, eight hundred thirty-three million, three hundred fifty-three thousand, five hundred twenty-two".