131220120001 has 8 divisors (see below), whose sum is σ = 131791132800. Its totient is φ = 130649290800.

The previous prime is 131220119981. The next prime is 131220120011. The reversal of 131220120001 is 100021022131.

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

It is a cyclic number.

It is not a de Polignac number, because 131220120001 - 2¹⁵ = 131220087233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131220120011) 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, 1499235 + ... + 1584343.

It is an arithmetic number, because the mean of its divisors is an integer number (16473891600).

Almost surely, 2^131220120001 is an apocalyptic number.

It is an amenable number.

131220120001 is a deficient number, since it is larger than the sum of its proper divisors (571012799).

131220120001 is an equidigital number, since it uses as much as digits as its factorization.

131220120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91799.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 131220120001 its reverse (100021022131), we get a palindrome (231241142132).

The spelling of 131220120001 in words is "one hundred thirty-one billion, two hundred twenty million, one hundred twenty thousand, one".