221373053147 has 2 divisors, whose sum is σ = 221373053148. Its totient is φ = 221373053146.

The previous prime is 221373053131. The next prime is 221373053159. The reversal of 221373053147 is 741350373122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221373053147 - 2⁴ = 221373053131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221373053147.

It is not a weakly prime, because it can be changed into another prime (221373050147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110686526573 + 110686526574.

It is an arithmetic number, because the mean of its divisors is an integer number (110686526574).

Almost surely, 2^221373053147 is an apocalyptic number.

221373053147 is a deficient number, since it is larger than the sum of its proper divisors (1).

221373053147 is an equidigital number, since it uses as much as digits as its factorization.

221373053147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 38.

The spelling of 221373053147 in words is "two hundred twenty-one billion, three hundred seventy-three million, fifty-three thousand, one hundred forty-seven".