101821131488 has 12 divisors (see below), whose sum is σ = 200460352680. Its totient is φ = 50910565728.

The previous prime is 101821131487. The next prime is 101821131547. The reversal of 101821131488 is 884131128101.

It is a happy number.

It is a super-3 number, since 3×101821131488³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101821131487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1590955148 + ... + 1590955211.

It is an arithmetic number, because the mean of its divisors is an integer number (16705029390).

Almost surely, 2^101821131488 is an apocalyptic number.

It is an amenable number.

101821131488 is a deficient number, since it is larger than the sum of its proper divisors (98639221192).

101821131488 is an equidigital number, since it uses as much as digits as its factorization.

101821131488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181910369 (or 3181910361 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 38.

Adding to 101821131488 its reverse (884131128101), we get a palindrome (985952259589).

The spelling of 101821131488 in words is "one hundred one billion, eight hundred twenty-one million, one hundred thirty-one thousand, four hundred eighty-eight".