21222023030 has 32 divisors (see below), whose sum is σ = 42249924864. Its totient is φ = 7624043136.

The previous prime is 21222023027. The next prime is 21222023041. The reversal of 21222023030 is 3032022212.

It is a super-2 number, since 2×21222023030² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2201222 + ... + 2210841.

It is an arithmetic number, because the mean of its divisors is an integer number (1320310152).

Almost surely, 2^21222023030 is an apocalyptic number.

21222023030 is a deficient number, since it is larger than the sum of its proper divisors (21027901834).

21222023030 is a wasteful number, since it uses less digits than its factorization.

21222023030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412120.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21222023030 its reverse (3032022212), we get a palindrome (24254045242).

The spelling of 21222023030 in words is "twenty-one billion, two hundred twenty-two million, twenty-three thousand, thirty".