140214221 has 16 divisors (see below), whose sum is σ = 162919680. Its totient is φ = 118195200.

The previous prime is 140214211. The next prime is 140214227. The reversal of 140214221 is 122412041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140214221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140214221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140214227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114605 + ... + 115821.

It is an arithmetic number, because the mean of its divisors is an integer number (10182480).

Almost surely, 2^140214221 is an apocalyptic number.

It is an amenable number.

140214221 is a deficient number, since it is larger than the sum of its proper divisors (22705459).

140214221 is a wasteful number, since it uses less digits than its factorization.

140214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 140214221 is about 11841.2085954095. The cubic root of 140214221 is about 519.5141183782.

Adding to 140214221 its reverse (122412041), we get a palindrome (262626262).

The spelling of 140214221 in words is "one hundred forty million, two hundred fourteen thousand, two hundred twenty-one".