2218022231 has 2 divisors, whose sum is σ = 2218022232. Its totient is φ = 2218022230.

The previous prime is 2218022207. The next prime is 2218022251. The reversal of 2218022231 is 1322208122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2218022231 - 2¹⁰ = 2218021207 is a prime.

It is a super-2 number, since 2×2218022231² = 9839245234420434722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2218022197 and 2218022206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218022201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109011115 + 1109011116.

It is an arithmetic number, because the mean of its divisors is an integer number (1109011116).

Almost surely, 2^2218022231 is an apocalyptic number.

2218022231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218022231 is an equidigital number, since it uses as much as digits as its factorization.

2218022231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2218022231 is about 47095.8833763632. The cubic root of 2218022231 is about 1304.1332414238.

The spelling of 2218022231 in words is "two billion, two hundred eighteen million, twenty-two thousand, two hundred thirty-one".