2241213021 has 12 divisors (see below), whose sum is σ = 3243674460. Its totient is φ = 1491203520.

The previous prime is 2241212993. The next prime is 2241213031. The reversal of 2241213021 is 1203121422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 675428121 + 1565784900 = 25989^2 + 39570^2 .

It is not a de Polignac number, because 2241213021 - 2⁶ = 2241212957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2241212985 and 2241213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241213031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240040 + ... + 249201.

It is an arithmetic number, because the mean of its divisors is an integer number (270306205).

Almost surely, 2^2241213021 is an apocalyptic number.

It is an amenable number.

2241213021 is a deficient number, since it is larger than the sum of its proper divisors (1002461439).

2241213021 is a wasteful number, since it uses less digits than its factorization.

2241213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489756 (or 489753 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2241213021 is about 47341.4514036061. The cubic root of 2241213021 is about 1308.6626643198.

Adding to 2241213021 its reverse (1203121422), we get a palindrome (3444334443).

The spelling of 2241213021 in words is "two billion, two hundred forty-one million, two hundred thirteen thousand, twenty-one".