140720301221 has 2 divisors, whose sum is σ = 140720301222. Its totient is φ = 140720301220.

The previous prime is 140720301199. The next prime is 140720301223. The reversal of 140720301221 is 122103027041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110299708996 + 30420592225 = 332114^2 + 174415^2 .

It is a cyclic number.

It is not a de Polignac number, because 140720301221 - 2¹⁰ = 140720300197 is a prime.

Together with 140720301223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140720301223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70360150610 + 70360150611.

It is an arithmetic number, because the mean of its divisors is an integer number (70360150611).

Almost surely, 2^140720301221 is an apocalyptic number.

It is an amenable number.

140720301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140720301221 is an equidigital number, since it uses as much as digits as its factorization.

140720301221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 140720301221 its reverse (122103027041), we get a palindrome (262823328262).

The spelling of 140720301221 in words is "one hundred forty billion, seven hundred twenty million, three hundred one thousand, two hundred twenty-one".