2205221031 has 20 divisors (see below), whose sum is σ = 3547622232. Its totient is φ = 1357058448.

The previous prime is 2205221023. The next prime is 2205221033. The reversal of 2205221031 is 1301225022.

It is not a de Polignac number, because 2205221031 - 2³ = 2205221023 is a prime.

It is a super-2 number, since 2×2205221031² = 9725999591129405922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2205220995 and 2205221013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205221033) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1046061 + ... + 1048166.

Almost surely, 2^2205221031 is an apocalyptic number.

2205221031 is a deficient number, since it is larger than the sum of its proper divisors (1342401201).

2205221031 is a wasteful number, since it uses less digits than its factorization.

2205221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094252 (or 2094243 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2205221031 is about 46959.7809939527. The cubic root of 2205221031 is about 1301.6194868001.

Adding to 2205221031 its reverse (1301225022), we get a palindrome (3506446053).

The spelling of 2205221031 in words is "two billion, two hundred five million, two hundred twenty-one thousand, thirty-one".