1220434101 has 16 divisors (see below), whose sum is σ = 1846521600. Its totient is φ = 796310784.

The previous prime is 1220434099. The next prime is 1220434129. The reversal of 1220434101 is 1014340221.

1220434101 is a `hidden beast` number, since 1 + 220 + 434 + 10 + 1 = 666.

It is not a de Polignac number, because 1220434101 - 2¹ = 1220434099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220434151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479596 + ... + 482133.

It is an arithmetic number, because the mean of its divisors is an integer number (115407600).

Almost surely, 2^1220434101 is an apocalyptic number.

It is an amenable number.

1220434101 is a deficient number, since it is larger than the sum of its proper divisors (626087499).

1220434101 is an equidigital number, since it uses as much as digits as its factorization.

1220434101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961785 (or 961779 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1220434101 is about 34934.7119782030. The cubic root of 1220434101 is about 1068.6564500449.

Adding to 1220434101 its reverse (1014340221), we get a palindrome (2234774322).

The spelling of 1220434101 in words is "one billion, two hundred twenty million, four hundred thirty-four thousand, one hundred one".