221038352113357 has 2 divisors, whose sum is σ = 221038352113358. Its totient is φ = 221038352113356.

The previous prime is 221038352113307. The next prime is 221038352113391. The reversal of 221038352113357 is 753311253830122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176949429390756 + 44088922722601 = 13302234^2 + 6639949^2 .

It is a cyclic number.

It is not a de Polignac number, because 221038352113357 - 2¹⁵ = 221038352080589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221038352113307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110519176056678 + 110519176056679.

It is an arithmetic number, because the mean of its divisors is an integer number (110519176056679).

Almost surely, 2^{221038352113357} is an apocalyptic number.

It is an amenable number.

221038352113357 is a deficient number, since it is larger than the sum of its proper divisors (1).

221038352113357 is an equidigital number, since it uses as much as digits as its factorization.

221038352113357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 221038352113357 in words is "two hundred twenty-one trillion, thirty-eight billion, three hundred fifty-two million, one hundred thirteen thousand, three hundred fifty-seven".