15350741221 has 2 divisors, whose sum is σ = 15350741222. Its totient is φ = 15350741220.

The previous prime is 15350741191. The next prime is 15350741227. The reversal of 15350741221 is 12214705351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15343776900 + 6964321 = 123870^2 + 2639^2 .

It is a cyclic number.

It is not a de Polignac number, because 15350741221 - 2⁹ = 15350740709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15350741227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7675370610 + 7675370611.

It is an arithmetic number, because the mean of its divisors is an integer number (7675370611).

Almost surely, 2^15350741221 is an apocalyptic number.

It is an amenable number.

15350741221 is a deficient number, since it is larger than the sum of its proper divisors (1).

15350741221 is an equidigital number, since it uses as much as digits as its factorization.

15350741221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 15350741221 in words is "fifteen billion, three hundred fifty million, seven hundred forty-one thousand, two hundred twenty-one".