35212221 has 12 divisors (see below), whose sum is σ = 55486080. Its totient is φ = 21340680.

The previous prime is 35212217. The next prime is 35212277. The reversal of 35212221 is 12221253.

It is not a de Polignac number, because 35212221 - 2² = 35212217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 35212194 and 35212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35212201) 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, 177741 + ... + 177938.

It is an arithmetic number, because the mean of its divisors is an integer number (4623840).

Almost surely, 2^35212221 is an apocalyptic number.

It is an amenable number.

35212221 is a deficient number, since it is larger than the sum of its proper divisors (20273859).

35212221 is a wasteful number, since it uses less digits than its factorization.

35212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355696 (or 355693 counting only the distinct ones).

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

The square root of 35212221 is about 5933.9886248627. The cubic root of 35212221 is about 327.7664315989.

Adding to 35212221 its reverse (12221253), we get a palindrome (47433474).

The spelling of 35212221 in words is "thirty-five million, two hundred twelve thousand, two hundred twenty-one".