21223210123222 has 8 divisors (see below), whose sum is σ = 31900184416656. Its totient is φ = 10589815317672.

The previous prime is 21223210123211. The next prime is 21223210123243. The reversal of 21223210123222 is 22232101232212.

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

It is a super-2 number, since 2×21223210123222² (a number of 27 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 3 ways as a sum of consecutive naturals, for example, 10894870753 + ... + 10894872700.

It is an arithmetic number, because the mean of its divisors is an integer number (3987523052082).

Almost surely, 2^{21223210123222} is an apocalyptic number.

21223210123222 is a deficient number, since it is larger than the sum of its proper divisors (10676974293434).

21223210123222 is a wasteful number, since it uses less digits than its factorization.

21223210123222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21789743942.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21223210123222 its reverse (22232101232212), we get a palindrome (43455311355434).

The spelling of 21223210123222 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred ten million, one hundred twenty-three thousand, two hundred twenty-two".