1001220541 has 8 divisors (see below), whose sum is σ = 1017576000. Its totient is φ = 984978720.

The previous prime is 1001220529. The next prime is 1001220551. The reversal of 1001220541 is 1450221001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001220541 - 2⁷ = 1001220413 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 (1001220551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10555 + ... + 45976.

It is an arithmetic number, because the mean of its divisors is an integer number (127197000).

Almost surely, 2^1001220541 is an apocalyptic number.

It is an amenable number.

1001220541 is a deficient number, since it is larger than the sum of its proper divisors (16355459).

1001220541 is an equidigital number, since it uses as much as digits as its factorization.

1001220541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56819.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1001220541 is about 31642.0691643262. The cubic root of 1001220541 is about 1000.4066815877.

Adding to 1001220541 its reverse (1450221001), we get a palindrome (2451441542).

The spelling of 1001220541 in words is "one billion, one million, two hundred twenty thousand, five hundred forty-one".