1220435001 has 48 divisors (see below), whose sum is σ = 1866608640. Its totient is φ = 767340000.

The previous prime is 1220434997. The next prime is 1220435003. The reversal of 1220435001 is 1005340221.

1220435001 is a `hidden beast` number, since 122 + 0 + 43 + 500 + 1 = 666.

1220435001 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220435001 - 2² = 1220434997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220435003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2485366 + ... + 2485856.

It is an arithmetic number, because the mean of its divisors is an integer number (38887680).

Almost surely, 2^1220435001 is an apocalyptic number.

It is an amenable number.

1220435001 is a deficient number, since it is larger than the sum of its proper divisors (646173639).

1220435001 is a wasteful number, since it uses less digits than its factorization.

1220435001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1220435001 is about 34934.7248593717. The cubic root of 1220435001 is about 1068.6567127358.

Adding to 1220435001 its reverse (1005340221), we get a palindrome (2225775222).

The spelling of 1220435001 in words is "one billion, two hundred twenty million, four hundred thirty-five thousand, one".