13211212312011 has 16 divisors (see below), whose sum is σ = 20316062624000. Its totient is φ = 7480004872608.

The previous prime is 13211212311929. The next prime is 13211212312013. The reversal of 13211212312011 is 11021321211231.

It is not a de Polignac number, because 13211212312011 - 2¹³ = 13211212303819 is a prime.

It is a super-3 number, since 3×13211212312011³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211212312013) 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, 2885802061 + ... + 2885806638.

It is an arithmetic number, because the mean of its divisors is an integer number (1269753914000).

Almost surely, 2^{13211212312011} is an apocalyptic number.

13211212312011 is a deficient number, since it is larger than the sum of its proper divisors (7104850311989).

13211212312011 is a wasteful number, since it uses less digits than its factorization.

13211212312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771608818.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 13211212312011 its reverse (11021321211231), we get a palindrome (24232533523242).

The spelling of 13211212312011 in words is "thirteen trillion, two hundred eleven billion, two hundred twelve million, three hundred twelve thousand, eleven".