2216121011 has 16 divisors (see below), whose sum is σ = 2425269504. Its totient is φ = 2012576544.

The previous prime is 2216120989. The next prime is 2216121109. The reversal of 2216121011 is 1101216122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216121011 is a prime.

It is a super-2 number, since 2×2216121011² = 9822384670791324242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216121311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242026 + ... + 1243808.

It is an arithmetic number, because the mean of its divisors is an integer number (151579344).

Almost surely, 2^2216121011 is an apocalyptic number.

2216121011 is a deficient number, since it is larger than the sum of its proper divisors (209148493).

2216121011 is a wasteful number, since it uses less digits than its factorization.

2216121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 2216121011 is about 47075.6944823972. The cubic root of 2216121011 is about 1303.7605140246.

Adding to 2216121011 its reverse (1101216122), we get a palindrome (3317337133).

The spelling of 2216121011 in words is "two billion, two hundred sixteen million, one hundred twenty-one thousand, eleven".