131121220101 has 8 divisors (see below), whose sum is σ = 175986097344. Its totient is φ = 86835244800.

The previous prime is 131121220091. The next prime is 131121220121. The reversal of 131121220101 is 101022121131.

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

It is not a de Polignac number, because 131121220101 - 2⁷ = 131121219973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121220121) 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, 144724956 + ... + 144725861.

It is an arithmetic number, because the mean of its divisors is an integer number (21998262168).

Almost surely, 2^131121220101 is an apocalyptic number.

It is an amenable number.

131121220101 is a deficient number, since it is larger than the sum of its proper divisors (44864877243).

131121220101 is a wasteful number, since it uses less digits than its factorization.

131121220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289450971.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 131121220101 its reverse (101022121131), we get a palindrome (232143341232).

The spelling of 131121220101 in words is "one hundred thirty-one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred one".