101421440020 has 48 divisors (see below), whose sum is σ = 230758089408. Its totient is φ = 37294225920.

The previous prime is 101421440009. The next prime is 101421440023. The reversal of 101421440020 is 20044124101.

It is a self number, because there is not a number n which added to its sum of digits gives 101421440020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101421440023) 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 in 15 ways as a sum of consecutive naturals, for example, 3453966 + ... + 3483205.

It is an arithmetic number, because the mean of its divisors is an integer number (4807460196).

Almost surely, 2^101421440020 is an apocalyptic number.

101421440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101421440020 is an abundant number, since it is smaller than the sum of its proper divisors (129336649388).

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

101421440020 is a wasteful number, since it uses less digits than its factorization.

101421440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6937240 (or 6937238 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 101421440020 its reverse (20044124101), we get a palindrome (121465564121).

The spelling of 101421440020 in words is "one hundred one billion, four hundred twenty-one million, four hundred forty thousand, twenty".