131101220211 has 32 divisors (see below), whose sum is σ = 199363627008. Its totient is φ = 75915809280.

The previous prime is 131101220209. The next prime is 131101220221. The reversal of 131101220211 is 112022101131.

It is not a de Polignac number, because 131101220211 - 2¹ = 131101220209 is a prime.

It is a super-2 number, since 2×131101220211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131101220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3566556 + ... + 3603126.

It is an arithmetic number, because the mean of its divisors is an integer number (6230113344).

Almost surely, 2^131101220211 is an apocalyptic number.

131101220211 is a deficient number, since it is larger than the sum of its proper divisors (68262406797).

131101220211 is a wasteful number, since it uses less digits than its factorization.

131101220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42011.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 131101220211 its reverse (112022101131), we get a palindrome (243123321342).

It can be divided in two parts, 13110 and 1220211, that added together give a palindrome (1233321).

The spelling of 131101220211 in words is "one hundred thirty-one billion, one hundred one million, two hundred twenty thousand, two hundred eleven".