21010011001012 has 12 divisors (see below), whose sum is σ = 40110021002016. Its totient is φ = 9550005000440.

The previous prime is 21010011000989. The next prime is 21010011001039.

21010011001012 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 21010011001012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238750124968 + ... + 238750125055.

It is an arithmetic number, because the mean of its divisors is an integer number (3342501750168).

Almost surely, 2^{21010011001012} is an apocalyptic number.

21010011001012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21010011001012 is a deficient number, since it is larger than the sum of its proper divisors (19100010001004).

21010011001012 is a wasteful number, since it uses less digits than its factorization.

21010011001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477500250038 (or 477500250036 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

It can be divided in two parts, 2101001 and 1001012, that multiplied together give a palindrome (2103127213012).

The spelling of 21010011001012 in words is "twenty-one trillion, ten billion, eleven million, one thousand, twelve".