21311003222 has 8 divisors (see below), whose sum is σ = 31999565136. Its totient is φ = 10644481512.

The previous prime is 21311003221. The next prime is 21311003239. The reversal of 21311003222 is 22230011312.

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 21311003222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311003221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5507633 + ... + 5511500.

It is an arithmetic number, because the mean of its divisors is an integer number (3999945642).

Almost surely, 2^21311003222 is an apocalyptic number.

21311003222 is a deficient number, since it is larger than the sum of its proper divisors (10688561914).

21311003222 is a wasteful number, since it uses less digits than its factorization.

21311003222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020102.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21311003222 its reverse (22230011312), we get a palindrome (43541014534).

The spelling of 21311003222 in words is "twenty-one billion, three hundred eleven million, three thousand, two hundred twenty-two".