21033031222 has 8 divisors (see below), whose sum is σ = 36056624976. Its totient is φ = 9014156232.

The previous prime is 21033031219. The next prime is 21033031273. The reversal of 21033031222 is 22213033012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21033031222.

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, 751179673 + ... + 751179700.

It is an arithmetic number, because the mean of its divisors is an integer number (4507078122).

Almost surely, 2^21033031222 is an apocalyptic number.

21033031222 is a deficient number, since it is larger than the sum of its proper divisors (15023593754).

21033031222 is a wasteful number, since it uses less digits than its factorization.

21033031222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502359382.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21033031222 its reverse (22213033012), we get a palindrome (43246064234).

The spelling of 21033031222 in words is "twenty-one billion, thirty-three million, thirty-one thousand, two hundred twenty-two".