12811501101 has 16 divisors (see below), whose sum is σ = 20371083264. Its totient is φ = 7002559344.

The previous prime is 12811501097. The next prime is 12811501103. The reversal of 12811501101 is 10110511821.

It is not a de Polignac number, because 12811501101 - 2² = 12811501097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811501103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13261941 + ... + 13262906.

It is an arithmetic number, because the mean of its divisors is an integer number (1273192704).

Almost surely, 2^12811501101 is an apocalyptic number.

It is an amenable number.

12811501101 is a deficient number, since it is larger than the sum of its proper divisors (7559582163).

12811501101 is a wasteful number, since it uses less digits than its factorization.

12811501101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26524880.

The product of its (nonzero) digits is 80, while the sum is 21.

The spelling of 12811501101 in words is "twelve billion, eight hundred eleven million, five hundred one thousand, one hundred one".