140221355 has 12 divisors (see below), whose sum is σ = 178747680. Its totient is φ = 105577344.

The previous prime is 140221309. The next prime is 140221397. The reversal of 140221355 is 553122041.

It is not a de Polignac number, because 140221355 - 2²⁰ = 139172779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140221355.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47075 + ... + 49964.

It is an arithmetic number, because the mean of its divisors is an integer number (14895640).

Almost surely, 2^140221355 is an apocalyptic number.

140221355 is a deficient number, since it is larger than the sum of its proper divisors (38526325).

140221355 is an equidigital number, since it uses as much as digits as its factorization.

140221355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97078 (or 97061 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 140221355 is about 11841.5098277204. The cubic root of 140221355 is about 519.5229290653.

Adding to 140221355 its reverse (553122041), we get a palindrome (693343396).

The spelling of 140221355 in words is "one hundred forty million, two hundred twenty-one thousand, three hundred fifty-five".