131220022001 has 8 divisors (see below), whose sum is σ = 132358921344. Its totient is φ = 130085495440.

The previous prime is 131220021953. The next prime is 131220022013. The reversal of 131220022001 is 100220022131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-131220022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131220022051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032905 + ... + 1152966.

It is an arithmetic number, because the mean of its divisors is an integer number (16544865168).

Almost surely, 2^131220022001 is an apocalyptic number.

It is an amenable number.

131220022001 is a deficient number, since it is larger than the sum of its proper divisors (1138899343).

131220022001 is a wasteful number, since it uses less digits than its factorization.

131220022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186391.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 131220022001 its reverse (100220022131), we get a palindrome (231440044132).

The spelling of 131220022001 in words is "one hundred thirty-one billion, two hundred twenty million, twenty-two thousand, one".