21123200222132 has 24 divisors (see below), whose sum is σ = 37592687721120. Its totient is φ = 10382437556640.

The previous prime is 21123200222123. The next prime is 21123200222161. The reversal of 21123200222132 is 23122200232112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21123200222098 and 21123200222107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16392698 + ... + 17634254.

It is an arithmetic number, because the mean of its divisors is an integer number (1566361988380).

Almost surely, 2^{21123200222132} is an apocalyptic number.

It is an amenable number.

21123200222132 is a deficient number, since it is larger than the sum of its proper divisors (16469487498988).

21123200222132 is a wasteful number, since it uses less digits than its factorization.

21123200222132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313711 (or 1313709 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21123200222132 its reverse (23122200232112), we get a palindrome (44245400454244).

The spelling of 21123200222132 in words is "twenty-one trillion, one hundred twenty-three billion, two hundred million, two hundred twenty-two thousand, one hundred thirty-two".