2220011001 has 24 divisors (see below), whose sum is σ = 3466237320. Its totient is φ = 1361062656.

The previous prime is 2220010997. The next prime is 2220011021. The reversal of 2220011001 is 1001100222.

2220011001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 103550976 + 2116460025 = 10176^2 + 46005^2 .

It is not a de Polignac number, because 2220011001 - 2² = 2220010997 is a prime.

It is a super-2 number, since 2×2220011001² = 9856897689122044002, which contains 22 as substring.

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 (2220011021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3796 + ... + 66741.

It is an arithmetic number, because the mean of its divisors is an integer number (144426555).

Almost surely, 2^2220011001 is an apocalyptic number.

It is an amenable number.

2220011001 is a deficient number, since it is larger than the sum of its proper divisors (1246226319).

2220011001 is a wasteful number, since it uses less digits than its factorization.

2220011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70825 (or 70822 counting only the distinct ones).

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

The square root of 2220011001 is about 47116.9926990253. The cubic root of 2220011001 is about 1304.5229048266.

Adding to 2220011001 its reverse (1001100222), we get a palindrome (3221111223).

The spelling of 2220011001 in words is "two billion, two hundred twenty million, eleven thousand, one".