131222021442612 has 12 divisors (see below), whose sum is σ = 306184716699456. Its totient is φ = 43740673814200.

The previous prime is 131222021442601. The next prime is 131222021442619. The reversal of 131222021442612 is 216244120222131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×131222021442612² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222021442619) 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 3 ways as a sum of consecutive naturals, for example, 5467584226764 + ... + 5467584226787.

It is an arithmetic number, because the mean of its divisors is an integer number (25515393058288).

Almost surely, 2^{131222021442612} is an apocalyptic number.

131222021442612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131222021442612 is an abundant number, since it is smaller than the sum of its proper divisors (174962695256844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131222021442612 is a wasteful number, since it uses less digits than its factorization.

131222021442612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10935168453558 (or 10935168453556 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 131222021442612 its reverse (216244120222131), we get a palindrome (347466141664743).

The spelling of 131222021442612 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, twenty-one million, four hundred forty-two thousand, six hundred twelve".