35052072221 has 6 divisors (see below), whose sum is σ = 35656248222. Its totient is φ = 34457965880.

The previous prime is 35052072199. The next prime is 35052072227. The reversal of 35052072221 is 12227025053.

It can be written as a sum of positive squares in only one way, i.e., 34452556996 + 599515225 = 185614^2 + 24485^2 .

It is a de Polignac number, because none of the positive numbers 2^k-35052072221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35052072227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5031290 + ... + 5038251.

It is an arithmetic number, because the mean of its divisors is an integer number (5942708037).

Almost surely, 2^35052072221 is an apocalyptic number.

It is an amenable number.

35052072221 is a deficient number, since it is larger than the sum of its proper divisors (604176001).

35052072221 is an equidigital number, since it uses as much as digits as its factorization.

35052072221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10069659 (or 10069600 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

Adding to 35052072221 its reverse (12227025053), we get a palindrome (47279097274).

The spelling of 35052072221 in words is "thirty-five billion, fifty-two million, seventy-two thousand, two hundred twenty-one".