140069221 has 4 divisors (see below), whose sum is σ = 140183692. Its totient is φ = 139954752.

The previous prime is 140069213. The next prime is 140069233. The reversal of 140069221 is 122960041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122960041 = 2417 ⋅50873.

It can be written as a sum of positive squares in 2 ways, for example, as 43046721 + 97022500 = 6561^2 + 9850^2 .

It is a cyclic number.

It is not a de Polignac number, because 140069221 - 2³ = 140069213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140069201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55380 + ... + 57853.

It is an arithmetic number, because the mean of its divisors is an integer number (35045923).

Almost surely, 2^140069221 is an apocalyptic number.

It is an amenable number.

140069221 is a deficient number, since it is larger than the sum of its proper divisors (114471).

140069221 is a wasteful number, since it uses less digits than its factorization.

140069221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114470.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140069221 is about 11835.0843258508. The cubic root of 140069221 is about 519.3349745690.

The spelling of 140069221 in words is "one hundred forty million, sixty-nine thousand, two hundred twenty-one".