2216121366 has 32 divisors (see below), whose sum is σ = 4578075648. Its totient is φ = 714431520.

The previous prime is 2216121353. The next prime is 2216121389. The reversal of 2216121366 is 6631216122.

It is a super-2 number, since 2×2216121366² = 9822387817683411912, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431385 + ... + 436491.

It is an arithmetic number, because the mean of its divisors is an integer number (143064864).

Almost surely, 2^2216121366 is an apocalyptic number.

2216121366 is an abundant number, since it is smaller than the sum of its proper divisors (2361954282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2216121366 is a wasteful number, since it uses less digits than its factorization.

2216121366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476.

The product of its digits is 5184, while the sum is 30.

The square root of 2216121366 is about 47075.6982529203. The cubic root of 2216121366 is about 1303.7605836409.

Adding to 2216121366 its reverse (6631216122), we get a palindrome (8847337488).

The spelling of 2216121366 in words is "two billion, two hundred sixteen million, one hundred twenty-one thousand, three hundred sixty-six".