2216981026 has 8 divisors (see below), whose sum is σ = 3581277084. Its totient is φ = 1023222000.

The previous prime is 2216981021. The next prime is 2216981099. The reversal of 2216981026 is 6201896122.

It can be written as a sum of positive squares in 2 ways, for example, as 2060706025 + 156275001 = 45395^2 + 12501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2216981021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42634225 + ... + 42634276.

Almost surely, 2^2216981026 is an apocalyptic number.

2216981026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2216981026 is a deficient number, since it is larger than the sum of its proper divisors (1364296058).

2216981026 is a wasteful number, since it uses less digits than its factorization.

2216981026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85268516.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2216981026 is about 47084.8279809962. The cubic root of 2216981026 is about 1303.9291432919.

The spelling of 2216981026 in words is "two billion, two hundred sixteen million, nine hundred eighty-one thousand, twenty-six".