140312399221 has 2 divisors, whose sum is σ = 140312399222. Its totient is φ = 140312399220.

The previous prime is 140312399173. The next prime is 140312399267. The reversal of 140312399221 is 122993213041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134864483121 + 5447916100 = 367239^2 + 73810^2 .

It is a cyclic number.

It is not a de Polignac number, because 140312399221 - 2¹⁹ = 140311874933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140312399321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70156199610 + 70156199611.

It is an arithmetic number, because the mean of its divisors is an integer number (70156199611).

Almost surely, 2^140312399221 is an apocalyptic number.

It is an amenable number.

140312399221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140312399221 is an equidigital number, since it uses as much as digits as its factorization.

140312399221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 140312399221 in words is "one hundred forty billion, three hundred twelve million, three hundred ninety-nine thousand, two hundred twenty-one".