131220553211 has 4 divisors (see below), whose sum is σ = 143149694424. Its totient is φ = 119291412000.

The previous prime is 131220553199. The next prime is 131220553231. The reversal of 131220553211 is 112355022131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131220553211 - 2⁶ = 131220553147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131220553231) 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, 5964570590 + ... + 5964570611.

It is an arithmetic number, because the mean of its divisors is an integer number (35787423606).

Almost surely, 2^131220553211 is an apocalyptic number.

131220553211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131220553211 is a deficient number, since it is larger than the sum of its proper divisors (11929141213).

131220553211 is a wasteful number, since it uses less digits than its factorization.

131220553211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11929141212.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 131220553211 its reverse (112355022131), we get a palindrome (243575575342).

The spelling of 131220553211 in words is "one hundred thirty-one billion, two hundred twenty million, five hundred fifty-three thousand, two hundred eleven".