2221023011 has 4 divisors (see below), whose sum is σ = 2221427400. Its totient is φ = 2220618624.

The previous prime is 2221022989. The next prime is 2221023043. The reversal of 2221023011 is 1103201222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1103201222 = 2 ⋅551600611.

It is a cyclic number.

It is not a de Polignac number, because 2221023011 - 2²² = 2216828707 is a prime.

It is a super-2 number, since 2×2221023011² = 9865886430783012242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221023061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193841 + ... + 204978.

It is an arithmetic number, because the mean of its divisors is an integer number (555356850).

Almost surely, 2^2221023011 is an apocalyptic number.

2221023011 is a deficient number, since it is larger than the sum of its proper divisors (404389).

2221023011 is an equidigital number, since it uses as much as digits as its factorization.

2221023011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404388.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2221023011 is about 47127.7308068190. The cubic root of 2221023011 is about 1304.7211004915.

Adding to 2221023011 its reverse (1103201222), we get a palindrome (3324224233).

The spelling of 2221023011 in words is "two billion, two hundred twenty-one million, twenty-three thousand, eleven".