21123130322222 has 32 divisors (see below), whose sum is σ = 32914013338080. Its totient is φ = 10159828715520.

The previous prime is 21123130322207. The next prime is 21123130322237. The reversal of 21123130322222 is 22222303132112.

It is an interprime number because it is at equal distance from previous prime (21123130322207) and next prime (21123130322237).

It is a junction number, because it is equal to n+sod(n) for n = 21123130322191 and 21123130322200.

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, 2796548 + ... + 7075799.

It is an arithmetic number, because the mean of its divisors is an integer number (1028562916815).

Almost surely, 2^{21123130322222} is an apocalyptic number.

21123130322222 is a deficient number, since it is larger than the sum of its proper divisors (11790883015858).

21123130322222 is a wasteful number, since it uses less digits than its factorization.

21123130322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9872756.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21123130322222 its reverse (22222303132112), we get a palindrome (43345433454334).

The spelling of 21123130322222 in words is "twenty-one trillion, one hundred twenty-three billion, one hundred thirty million, three hundred twenty-two thousand, two hundred twenty-two".