131212444101211 has 32 divisors (see below), whose sum is σ = 148805620162560. Its totient is φ = 114658108404000.

The previous prime is 131212444101199. The next prime is 131212444101253. The reversal of 131212444101211 is 112101444212131.

It is a cyclic number.

It is not a de Polignac number, because 131212444101211 - 2¹³ = 131212444093019 is a prime.

It is a super-2 number, since 2×131212444101211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131212444101211.

It is not an unprimeable number, because it can be changed into a prime (131212444104211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30012210 + ... + 34105096.

It is an arithmetic number, because the mean of its divisors is an integer number (4650175630080).

Almost surely, 2^{131212444101211} is an apocalyptic number.

131212444101211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131212444101211 is a deficient number, since it is larger than the sum of its proper divisors (17593176061349).

131212444101211 is a wasteful number, since it uses less digits than its factorization.

131212444101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094055.

The product of its (nonzero) digits is 1536, while the sum is 28.

Adding to 131212444101211 its reverse (112101444212131), we get a palindrome (243313888313342).

The spelling of 131212444101211 in words is "one hundred thirty-one trillion, two hundred twelve billion, four hundred forty-four million, one hundred one thousand, two hundred eleven".