21123310100222 has 8 divisors (see below), whose sum is σ = 34565416527672. Its totient is φ = 9601504591000.

The previous prime is 21123310100143. The next prime is 21123310100323. The reversal of 21123310100222 is 22200101332112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21123310100194 and 21123310100203.

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, 480075229529 + ... + 480075229572.

It is an arithmetic number, because the mean of its divisors is an integer number (4320677065959).

Almost surely, 2^{21123310100222} is an apocalyptic number.

21123310100222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21123310100222 is a deficient number, since it is larger than the sum of its proper divisors (13442106427450).

21123310100222 is a wasteful number, since it uses less digits than its factorization.

21123310100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960150459114.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21123310100222 its reverse (22200101332112), we get a palindrome (43323411432334).

The spelling of 21123310100222 in words is "twenty-one trillion, one hundred twenty-three billion, three hundred ten million, one hundred thousand, two hundred twenty-two".