140100221421 has 12 divisors (see below), whose sum is σ = 202652421660. Its totient is φ = 93268408320.

The previous prime is 140100221413. The next prime is 140100221447. The reversal of 140100221421 is 124122001041.

140100221421 is a `hidden beast` number, since 1 + 401 + 0 + 0 + 221 + 42 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30182112900 + 109918108521 = 173730^2 + 331539^2 .

It is not a de Polignac number, because 140100221421 - 2³ = 140100221413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140100221394 and 140100221403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140100221621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10971540 + ... + 10984301.

It is an arithmetic number, because the mean of its divisors is an integer number (16887701805).

Almost surely, 2^140100221421 is an apocalyptic number.

It is an amenable number.

140100221421 is a deficient number, since it is larger than the sum of its proper divisors (62552200239).

140100221421 is a wasteful number, since it uses less digits than its factorization.

140100221421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21956556 (or 21956553 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 140100221421 its reverse (124122001041), we get a palindrome (264222222462).

The spelling of 140100221421 in words is "one hundred forty billion, one hundred million, two hundred twenty-one thousand, four hundred twenty-one".