21112001030105 has 16 divisors (see below), whose sum is σ = 25572280219200. Its totient is φ = 16731080936640.

The previous prime is 21112001030077. The next prime is 21112001030143. The reversal of 21112001030105 is 50103010021112.

It is not a de Polignac number, because 21112001030105 - 2⁸ = 21112001029849 is a prime.

It is a super-2 number, since 2×21112001030105² (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, 1572335 + ... + 6685524.

It is an arithmetic number, because the mean of its divisors is an integer number (1598267513700).

Almost surely, 2^{21112001030105} is an apocalyptic number.

It is an amenable number.

21112001030105 is a deficient number, since it is larger than the sum of its proper divisors (4460279189095).

21112001030105 is a wasteful number, since it uses less digits than its factorization.

21112001030105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262664.

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 21112001030105 its reverse (50103010021112), we get a palindrome (71215011051217).

The spelling of 21112001030105 in words is "twenty-one trillion, one hundred twelve billion, one million, thirty thousand, one hundred five".