21133222230 has 64 divisors (see below), whose sum is σ = 51213657600. Its totient is φ = 5580852480.

The previous prime is 21133222211. The next prime is 21133222241. The reversal of 21133222230 is 3222233112.

It is a happy number.

It is a super-2 number, since 2×21133222230² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21133222197 and 21133222206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1699335 + ... + 1711725.

It is an arithmetic number, because the mean of its divisors is an integer number (800213400).

Almost surely, 2^21133222230 is an apocalyptic number.

21133222230 is an abundant number, since it is smaller than the sum of its proper divisors (30080435370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21133222230 is a wasteful number, since it uses less digits than its factorization.

21133222230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21133222230 its reverse (3222233112), we get a palindrome (24355455342).

The spelling of 21133222230 in words is "twenty-one billion, one hundred thirty-three million, two hundred twenty-two thousand, two hundred thirty".