21133242242 has 24 divisors (see below), whose sum is σ = 37425741264.
Its totient is φ = 8921920392.
The previous prime is 21133242223. The next prime is 21133242301. The reversal of 21133242242 is 24224233112.
Adding to 21133242242 its reverse (24224233112), we get a palindrome (45357475354).
It is a super-2 number, since 2×211332422422 (a number of 21 digits) contains 22 as substring.
It is an unprimeable number.
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 11 ways as a sum of consecutive naturals, for example, 1602728 + ... + 1615859.
It is an arithmetic number, because the mean of its divisors is an integer number (1559405886).
Almost surely, 221133242242 is an apocalyptic number.
21133242242 is a deficient number, since it is larger than the sum of its proper divisors (16292499022).
21133242242 is a wasteful number, since it uses less digits than its factorization.
21133242242 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3218670 (or 3218663 counting only the distinct ones).
The product of its digits is 4608, while the sum is 26.
The spelling of 21133242242 in words is "twenty-one billion, one hundred thirty-three million, two hundred forty-two thousand, two hundred forty-two".