140233221 has 32 divisors (see below), whose sum is σ = 221253120. Its totient is φ = 87478272.

The previous prime is 140233217. The next prime is 140233229. The reversal of 140233221 is 122332041.

It is not a de Polignac number, because 140233221 - 2² = 140233217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140233194 and 140233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140233229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87796 + ... + 89378.

It is an arithmetic number, because the mean of its divisors is an integer number (6914160).

Almost surely, 2^140233221 is an apocalyptic number.

It is an amenable number.

140233221 is a deficient number, since it is larger than the sum of its proper divisors (81019899).

140233221 is a wasteful number, since it uses less digits than its factorization.

140233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140233221 is about 11842.0108512026. The cubic root of 140233221 is about 519.5375832412.

Adding to 140233221 its reverse (122332041), we get a palindrome (262565262).

The spelling of 140233221 in words is "one hundred forty million, two hundred thirty-three thousand, two hundred twenty-one".