140422043221021 has 4 divisors (see below), whose sum is σ = 140546420585500. Its totient is φ = 140297665856544.

The previous prime is 140422043220983. The next prime is 140422043221027. The reversal of 140422043221021 is 120122340224041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89838455239225 + 50583587981796 = 9478315^2 + 7112214^2 .

It is a cyclic number.

It is not a de Polignac number, because 140422043221021 - 2¹⁵ = 140422043188253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140422043221027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62188680546 + ... + 62188682803.

It is an arithmetic number, because the mean of its divisors is an integer number (35136605146375).

Almost surely, 2^{140422043221021} is an apocalyptic number.

It is an amenable number.

140422043221021 is a deficient number, since it is larger than the sum of its proper divisors (124377364479).

140422043221021 is a wasteful number, since it uses less digits than its factorization.

140422043221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124377364478.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 140422043221021 its reverse (120122340224041), we get a palindrome (260544383445062).

The spelling of 140422043221021 in words is "one hundred forty trillion, four hundred twenty-two billion, forty-three million, two hundred twenty-one thousand, twenty-one".