21223201022 has 16 divisors (see below), whose sum is σ = 32999670000. Its totient is φ = 10224802560.

The previous prime is 21223201007. The next prime is 21223201049. The reversal of 21223201022 is 22010232212.

It is a super-3 number, since 3×21223201022³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344147 + ... + 401102.

It is an arithmetic number, because the mean of its divisors is an integer number (2062479375).

Almost surely, 2^21223201022 is an apocalyptic number.

21223201022 is a deficient number, since it is larger than the sum of its proper divisors (11776468978).

21223201022 is a wasteful number, since it uses less digits than its factorization.

21223201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745771.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21223201022 its reverse (22010232212), we get a palindrome (43233433234).

The spelling of 21223201022 in words is "twenty-one billion, two hundred twenty-three million, two hundred one thousand, twenty-two".