21133152242 has 8 divisors (see below), whose sum is σ = 31723986096. Its totient is φ = 10558490212.

The previous prime is 21133152179. The next prime is 21133152269. The reversal of 21133152242 is 24225133112.

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

It is a super-2 number, since 2×21133152242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039688 + ... + 4044915.

It is an arithmetic number, because the mean of its divisors is an integer number (3965498262).

Almost surely, 2^21133152242 is an apocalyptic number.

21133152242 is a deficient number, since it is larger than the sum of its proper divisors (10590833854).

21133152242 is a wasteful number, since it uses less digits than its factorization.

21133152242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8085912.

The product of its digits is 2880, while the sum is 26.

Adding to 21133152242 its reverse (24225133112), we get a palindrome (45358285354).

The spelling of 21133152242 in words is "twenty-one billion, one hundred thirty-three million, one hundred fifty-two thousand, two hundred forty-two".