1220035401 has 48 divisors (see below), whose sum is σ = 1951971840. Its totient is φ = 729527040.

The previous prime is 1220035363. The next prime is 1220035433. The reversal of 1220035401 is 1045300221.

1220035401 is a `hidden beast` number, since 122 + 0 + 0 + 3 + 540 + 1 = 666.

It is not a de Polignac number, because 1220035401 - 2⁹ = 1220034889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220035451) 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, 2009640 + ... + 2010246.

It is an arithmetic number, because the mean of its divisors is an integer number (40666080).

Almost surely, 2^1220035401 is an apocalyptic number.

It is an amenable number.

1220035401 is a deficient number, since it is larger than the sum of its proper divisors (731936439).

1220035401 is a wasteful number, since it uses less digits than its factorization.

1220035401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1083 counting only the distinct ones).

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

The square root of 1220035401 is about 34929.0051533106. The cubic root of 1220035401 is about 1068.5400653005.

Adding to 1220035401 its reverse (1045300221), we get a palindrome (2265335622).

The spelling of 1220035401 in words is "one billion, two hundred twenty million, thirty-five thousand, four hundred one".