221141351 has 2 divisors, whose sum is σ = 221141352. Its totient is φ = 221141350.

The previous prime is 221141257. The next prime is 221141363. The reversal of 221141351 is 153141122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221141351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221141051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110570675 + 110570676.

It is an arithmetic number, because the mean of its divisors is an integer number (110570676).

Almost surely, 2^221141351 is an apocalyptic number.

221141351 is a deficient number, since it is larger than the sum of its proper divisors (1).

221141351 is an equidigital number, since it uses as much as digits as its factorization.

221141351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 221141351 is about 14870.8221359816. The cubic root of 221141351 is about 604.7232311002.

Adding to 221141351 its reverse (153141122), we get a palindrome (374282473).

The spelling of 221141351 in words is "two hundred twenty-one million, one hundred forty-one thousand, three hundred fifty-one".