148221271 has 4 divisors (see below), whose sum is σ = 161695944. Its totient is φ = 134746600.

The previous prime is 148221253. The next prime is 148221287. The reversal of 148221271 is 172122841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148221271 - 2¹⁵ = 148188503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148221211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6737320 + ... + 6737341.

It is an arithmetic number, because the mean of its divisors is an integer number (40423986).

Almost surely, 2^148221271 is an apocalyptic number.

148221271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148221271 is a deficient number, since it is larger than the sum of its proper divisors (13474673).

148221271 is a wasteful number, since it uses less digits than its factorization.

148221271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13474672.

The product of its digits is 1792, while the sum is 28.

The square root of 148221271 is about 12174.6158460955. The cubic root of 148221271 is about 529.2207261392.

The spelling of 148221271 in words is "one hundred forty-eight million, two hundred twenty-one thousand, two hundred seventy-one".