21222033142 has 8 divisors (see below), whose sum is σ = 31833903600. Its totient is φ = 10610731944.

The previous prime is 21222033127. The next prime is 21222033169. The reversal of 21222033142 is 24133022212.

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

It is a congruent number.

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, 32017 + ... + 208492.

It is an arithmetic number, because the mean of its divisors is an integer number (3979237950).

Almost surely, 2^21222033142 is an apocalyptic number.

21222033142 is a deficient number, since it is larger than the sum of its proper divisors (10611870458).

21222033142 is a wasteful number, since it uses less digits than its factorization.

21222033142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284630.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21222033142 its reverse (24133022212), we get a palindrome (45355055354).

The spelling of 21222033142 in words is "twenty-one billion, two hundred twenty-two million, thirty-three thousand, one hundred forty-two".