2216995381 has 16 divisors (see below), whose sum is σ = 2392550784. Its totient is φ = 2046841344.

The previous prime is 2216995367. The next prime is 2216995397. The reversal of 2216995381 is 1835996122.

It is not a de Polignac number, because 2216995381 - 2⁹ = 2216994869 is a prime.

It is a super-2 number, since 2×2216995381² = 9830137038750670322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216995331) 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, 181441 + ... + 193273.

It is an arithmetic number, because the mean of its divisors is an integer number (149534424).

Almost surely, 2^2216995381 is an apocalyptic number.

It is an amenable number.

2216995381 is a deficient number, since it is larger than the sum of its proper divisors (175555403).

2216995381 is a wasteful number, since it uses less digits than its factorization.

2216995381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12060.

The product of its digits is 233280, while the sum is 46.

The square root of 2216995381 is about 47084.9804183882. The cubic root of 2216995381 is about 1303.9319576089.

The spelling of 2216995381 in words is "two billion, two hundred sixteen million, nine hundred ninety-five thousand, three hundred eighty-one".