35221522221 has 64 divisors (see below), whose sum is σ = 55571443200. Its totient is φ = 22005623808.

The previous prime is 35221522207. The next prime is 35221522229. The reversal of 35221522221 is 12222512253.

It is not a de Polignac number, because 35221522221 - 2⁶ = 35221522157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35221522229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14571205 + ... + 14573621.

It is an arithmetic number, because the mean of its divisors is an integer number (868303800).

Almost surely, 2^35221522221 is an apocalyptic number.

It is an amenable number.

35221522221 is a deficient number, since it is larger than the sum of its proper divisors (20349920979).

35221522221 is a wasteful number, since it uses less digits than its factorization.

35221522221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995 (or 2989 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The spelling of 35221522221 in words is "thirty-five billion, two hundred twenty-one million, five hundred twenty-two thousand, two hundred twenty-one".