2245211021 has 2 divisors, whose sum is σ = 2245211022. Its totient is φ = 2245211020.

The previous prime is 2245211011. The next prime is 2245211039. The reversal of 2245211021 is 1201125422.

2245211021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1906282921 + 338928100 = 43661^2 + 18410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245211021 - 2³⁰ = 1171469197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2245210984 and 2245211002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2245211011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122605510 + 1122605511.

It is an arithmetic number, because the mean of its divisors is an integer number (1122605511).

Almost surely, 2^2245211021 is an apocalyptic number.

It is an amenable number.

2245211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245211021 is an equidigital number, since it uses as much as digits as its factorization.

2245211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2245211021 is about 47383.6577418840. The cubic root of 2245211021 is about 1309.4403570690.

Adding to 2245211021 its reverse (1201125422), we get a palindrome (3446336443).

The spelling of 2245211021 in words is "two billion, two hundred forty-five million, two hundred eleven thousand, twenty-one".