21123301322001 has 16 divisors (see below), whose sum is σ = 28320503597568. Its totient is φ = 14004152697600.

The previous prime is 21123301321951. The next prime is 21123301322027. The reversal of 21123301322001 is 10022310332112.

It is not a de Polignac number, because 21123301322001 - 2³¹ = 21121153838353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21123301329001) by changing a digit.

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, 33728761 + ... + 34349321.

It is an arithmetic number, because the mean of its divisors is an integer number (1770031474848).

Almost surely, 2^{21123301322001} is an apocalyptic number.

It is an amenable number.

21123301322001 is a deficient number, since it is larger than the sum of its proper divisors (7197202275567).

21123301322001 is a wasteful number, since it uses less digits than its factorization.

21123301322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683432.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21123301322001 its reverse (10022310332112), we get a palindrome (31145611654113).

The spelling of 21123301322001 in words is "twenty-one trillion, one hundred twenty-three billion, three hundred one million, three hundred twenty-two thousand, one".