21623522201103 has 16 divisors (see below), whose sum is σ = 29445183682560. Its totient is φ = 14108779166496.

The previous prime is 21623522201087. The next prime is 21623522201159. The reversal of 21623522201103 is 30110222532612.

It is not a de Polignac number, because 21623522201103 - 2⁴ = 21623522201087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21623522201003) 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, 10181713 + ... + 12120821.

It is an arithmetic number, because the mean of its divisors is an integer number (1840323980160).

Almost surely, 2^{21623522201103} is an apocalyptic number.

21623522201103 is a deficient number, since it is larger than the sum of its proper divisors (7821661481457).

21623522201103 is a wasteful number, since it uses less digits than its factorization.

21623522201103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018246.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 21623522201103 its reverse (30110222532612), we get a palindrome (51733744733715).

The spelling of 21623522201103 in words is "twenty-one trillion, six hundred twenty-three billion, five hundred twenty-two million, two hundred one thousand, one hundred three".