140252111221 has 2 divisors, whose sum is σ = 140252111222. Its totient is φ = 140252111220.

The previous prime is 140252111203. The next prime is 140252111227. The reversal of 140252111221 is 122111252041.

140252111221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135158434321 + 5093676900 = 367639^2 + 71370^2 .

It is a cyclic number.

It is not a de Polignac number, because 140252111221 - 2⁵ = 140252111189 is a prime.

It is a super-2 number, since 2×140252111221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140252111192 and 140252111201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140252111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70126055610 + 70126055611.

It is an arithmetic number, because the mean of its divisors is an integer number (70126055611).

Almost surely, 2^140252111221 is an apocalyptic number.

It is an amenable number.

140252111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140252111221 is an equidigital number, since it uses as much as digits as its factorization.

140252111221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 140252111221 its reverse (122111252041), we get a palindrome (262363363262).

The spelling of 140252111221 in words is "one hundred forty billion, two hundred fifty-two million, one hundred eleven thousand, two hundred twenty-one".