1230220071 has 12 divisors (see below), whose sum is σ = 1780104040. Its totient is φ = 818706960.

The previous prime is 1230220063. The next prime is 1230220073. The reversal of 1230220071 is 1700220321.

It is not a de Polignac number, because 1230220071 - 2³ = 1230220063 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 (1230220073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114556 + ... + 124833.

Almost surely, 2^1230220071 is an apocalyptic number.

1230220071 is a deficient number, since it is larger than the sum of its proper divisors (549883969).

1230220071 is a wasteful number, since it uses less digits than its factorization.

1230220071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239966 (or 239963 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1230220071 is about 35074.4931681129. The cubic root of 1230220071 is about 1071.5051664632.

Adding to 1230220071 its reverse (1700220321), we get a palindrome (2930440392).

The spelling of 1230220071 in words is "one billion, two hundred thirty million, two hundred twenty thousand, seventy-one".