21012133222 has 8 divisors (see below), whose sum is σ = 32605034400. Its totient is φ = 10143788424.

The previous prime is 21012133217. The next prime is 21012133273. The reversal of 21012133222 is 22233121012.

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

It is a super-2 number, since 2×21012133222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21012133222.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 181139022 + ... + 181139137.

It is an arithmetic number, because the mean of its divisors is an integer number (4075629300).

Almost surely, 2^21012133222 is an apocalyptic number.

21012133222 is a deficient number, since it is larger than the sum of its proper divisors (11592901178).

21012133222 is a wasteful number, since it uses less digits than its factorization.

21012133222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362278190.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21012133222 its reverse (22233121012), we get a palindrome (43245254234).

The spelling of 21012133222 in words is "twenty-one billion, twelve million, one hundred thirty-three thousand, two hundred twenty-two".