140242233241221 has 4 divisors (see below), whose sum is σ = 186989644321632. Its totient is φ = 93494822160812.

The previous prime is 140242233241189. The next prime is 140242233241241. The reversal of 140242233241221 is 122142332242041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140242233241221 - 2⁵ = 140242233241189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140242233241241) 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, 23373705540201 + ... + 23373705540206.

It is an arithmetic number, because the mean of its divisors is an integer number (46747411080408).

Almost surely, 2^{140242233241221} is an apocalyptic number.

It is an amenable number.

140242233241221 is a deficient number, since it is larger than the sum of its proper divisors (46747411080411).

140242233241221 is an equidigital number, since it uses as much as digits as its factorization.

140242233241221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46747411080410.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 140242233241221 its reverse (122142332242041), we get a palindrome (262384565483262).

The spelling of 140242233241221 in words is "one hundred forty trillion, two hundred forty-two billion, two hundred thirty-three million, two hundred forty-one thousand, two hundred twenty-one".