140120213334221 has 4 divisors (see below), whose sum is σ = 140123576072700. Its totient is φ = 140116850595744.

The previous prime is 140120213334209. The next prime is 140120213334287. The reversal of 140120213334221 is 122433312021041.

It is a happy number.

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 87294732217225 + 52825481116996 = 9343165^2 + 7268114^2 .

It is a cyclic number.

It is not a de Polignac number, because 140120213334221 - 2¹⁰ = 140120213333197 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 (140120293334221) 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, 1681306736 + ... + 1681390073.

It is an arithmetic number, because the mean of its divisors is an integer number (35030894018175).

Almost surely, 2^{140120213334221} is an apocalyptic number.

It is an amenable number.

140120213334221 is a deficient number, since it is larger than the sum of its proper divisors (3362738479).

140120213334221 is an equidigital number, since it uses as much as digits as its factorization.

140120213334221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3362738478.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 140120213334221 its reverse (122433312021041), we get a palindrome (262553525355262).

The spelling of 140120213334221 in words is "one hundred forty trillion, one hundred twenty billion, two hundred thirteen million, three hundred thirty-four thousand, two hundred twenty-one".