3512250221 has 2 divisors, whose sum is σ = 3512250222. Its totient is φ = 3512250220.

The previous prime is 3512250179. The next prime is 3512250227. The reversal of 3512250221 is 1220522153.

3512250221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3467560996 + 44689225 = 58886^2 + 6685^2 .

It is a cyclic number.

It is not a de Polignac number, because 3512250221 - 2²² = 3508055917 is a prime.

It is a super-2 number, since 2×3512250221² = 24671803229829097682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3512250227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1756125110 + 1756125111.

It is an arithmetic number, because the mean of its divisors is an integer number (1756125111).

Almost surely, 2^3512250221 is an apocalyptic number.

It is an amenable number.

3512250221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3512250221 is an equidigital number, since it uses as much as digits as its factorization.

3512250221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 3512250221 is about 59264.2406599460. The cubic root of 3512250221 is about 1520.0637988284.

Adding to 3512250221 its reverse (1220522153), we get a palindrome (4732772374).

The spelling of 3512250221 in words is "three billion, five hundred twelve million, two hundred fifty thousand, two hundred twenty-one".