13100021012 has 12 divisors (see below), whose sum is σ = 24688501236. Its totient is φ = 6046163520.

The previous prime is 13100021009. The next prime is 13100021017. The reversal of 13100021012 is 21012000131.

It can be written as a sum of positive squares in 2 ways, for example, as 6236892676 + 6863128336 = 78974^2 + 82844^2 .

It is a super-3 number, since 3×13100021012³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 13100020984 and 13100021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13100021017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125961689 + ... + 125961792.

It is an arithmetic number, because the mean of its divisors is an integer number (2057375103).

Almost surely, 2^13100021012 is an apocalyptic number.

It is an amenable number.

13100021012 is a deficient number, since it is larger than the sum of its proper divisors (11588480224).

13100021012 is a wasteful number, since it uses less digits than its factorization.

13100021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251923498 (or 251923496 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 13100021012 its reverse (21012000131), we get a palindrome (34112021143).

The spelling of 13100021012 in words is "thirteen billion, one hundred million, twenty-one thousand, twelve".