221051142371 has 2 divisors, whose sum is σ = 221051142372. Its totient is φ = 221051142370.

The previous prime is 221051142269. The next prime is 221051142467. The reversal of 221051142371 is 173241150122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221051142371 - 2²⁶ = 220984033507 is a prime.

It is a super-2 number, since 2×221051142371² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221051142071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110525571185 + 110525571186.

It is an arithmetic number, because the mean of its divisors is an integer number (110525571186).

Almost surely, 2^221051142371 is an apocalyptic number.

221051142371 is a deficient number, since it is larger than the sum of its proper divisors (1).

221051142371 is an equidigital number, since it uses as much as digits as its factorization.

221051142371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 221051142371 its reverse (173241150122), we get a palindrome (394292292493).

The spelling of 221051142371 in words is "two hundred twenty-one billion, fifty-one million, one hundred forty-two thousand, three hundred seventy-one".