2102233221 has 24 divisors (see below), whose sum is σ = 3393411840. Its totient is φ = 1243003200.

The previous prime is 2102233219. The next prime is 2102233253. The reversal of 2102233221 is 1223322012.

2102233221 is a `hidden beast` number, since 210 + 2 + 233 + 221 = 666.

It is not a de Polignac number, because 2102233221 - 2¹ = 2102233219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2102233194 and 2102233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102233261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254901 + ... + 263018.

It is an arithmetic number, because the mean of its divisors is an integer number (141392160).

Almost surely, 2^2102233221 is an apocalyptic number.

It is an amenable number.

2102233221 is a deficient number, since it is larger than the sum of its proper divisors (1291178619).

2102233221 is a wasteful number, since it uses less digits than its factorization.

2102233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517977 (or 517974 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2102233221 is about 45850.1169137004. The cubic root of 2102233221 is about 1281.0329432630.

Adding to 2102233221 its reverse (1223322012), we get a palindrome (3325555233).

It can be divided in two parts, 210223 and 3221, that added together give a square (213444 = 462²).

The spelling of 2102233221 in words is "two billion, one hundred two million, two hundred thirty-three thousand, two hundred twenty-one".