101021421504 has 28 divisors (see below), whose sum is σ = 267285844904. Its totient is φ = 33673807104.

The previous prime is 101021421451. The next prime is 101021421511. The reversal of 101021421504 is 405124120101.

101021421504 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 263076427 + ... + 263076810.

Almost surely, 2^101021421504 is an apocalyptic number.

It is an amenable number.

101021421504 is an abundant number, since it is smaller than the sum of its proper divisors (166264423400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101021421504 is an equidigital number, since it uses as much as digits as its factorization.

101021421504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526153252 (or 526153242 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 101021421504 its reverse (405124120101), we get a palindrome (506145541605).

The spelling of 101021421504 in words is "one hundred one billion, twenty-one million, four hundred twenty-one thousand, five hundred four".