140115221 has 2 divisors, whose sum is σ = 140115222. Its totient is φ = 140115220.

The previous prime is 140115203. The next prime is 140115229. The reversal of 140115221 is 122511041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80748196 + 59367025 = 8986^2 + 7705^2 .

It is a cyclic number.

It is not a de Polignac number, because 140115221 - 2²⁶ = 73006357 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140115221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140115229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70057610 + 70057611.

It is an arithmetic number, because the mean of its divisors is an integer number (70057611).

Almost surely, 2^140115221 is an apocalyptic number.

It is an amenable number.

140115221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140115221 is an equidigital number, since it uses as much as digits as its factorization.

140115221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 140115221 is about 11837.0275407300. The cubic root of 140115221 is about 519.3918197820.

Adding to 140115221 its reverse (122511041), we get a palindrome (262626262).

The spelling of 140115221 in words is "one hundred forty million, one hundred fifteen thousand, two hundred twenty-one".