11020220001 has 72 divisors (see below), whose sum is σ = 19558843200. Its totient is φ = 5945244480.

The previous prime is 11020219997. The next prime is 11020220047. The reversal of 11020220001 is 10002202011.

It is not a de Polignac number, because 11020220001 - 2² = 11020219997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11020224001) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2603755 + ... + 2607983.

It is an arithmetic number, because the mean of its divisors is an integer number (271650600).

Almost surely, 2^11020220001 is an apocalyptic number.

It is an amenable number.

11020220001 is a deficient number, since it is larger than the sum of its proper divisors (8538623199).

11020220001 is a wasteful number, since it uses less digits than its factorization.

11020220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579 (or 4569 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11020220001 its reverse (10002202011), we get a palindrome (21022422012).

The spelling of 11020220001 in words is "eleven billion, twenty million, two hundred twenty thousand, one".