131010101001221 has 8 divisors (see below), whose sum is σ = 142102821231840. Its totient is φ = 120062383649712.

The previous prime is 131010101001023. The next prime is 131010101001229. The reversal of 131010101001221 is 122100101010131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131010101001221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131010101001196 and 131010101001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131010101001229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36250717895 + ... + 36250721508.

It is an arithmetic number, because the mean of its divisors is an integer number (17762852653980).

Almost surely, 2^{131010101001221} is an apocalyptic number.

It is an amenable number.

131010101001221 is a deficient number, since it is larger than the sum of its proper divisors (11092720230619).

131010101001221 is a wasteful number, since it uses less digits than its factorization.

131010101001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72501439555.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 131010101001221 its reverse (122100101010131), we get a palindrome (253110202011352).

The spelling of 131010101001221 in words is "one hundred thirty-one trillion, ten billion, one hundred one million, one thousand, two hundred twenty-one".