21003321123122 has 32 divisors (see below), whose sum is σ = 34403320449792. Its totient is φ = 9558238944384.

The previous prime is 21003321123067. The next prime is 21003321123143. The reversal of 21003321123122 is 22132112330012.

It is a super-2 number, since 2×21003321123122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4842473 + ... + 8090499.

It is an arithmetic number, because the mean of its divisors is an integer number (1075103764056).

Almost surely, 2^{21003321123122} is an apocalyptic number.

21003321123122 is a deficient number, since it is larger than the sum of its proper divisors (13399999326670).

21003321123122 is a wasteful number, since it uses less digits than its factorization.

21003321123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251522.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21003321123122 its reverse (22132112330012), we get a palindrome (43135433453134).

The spelling of 21003321123122 in words is "twenty-one trillion, three billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty-two".