221570701612 has 12 divisors (see below), whose sum is σ = 417575553136. Its totient is φ = 102263400720.

The previous prime is 221570701603. The next prime is 221570701613. The reversal of 221570701612 is 216107075122.

It is not an unprimeable number, because it can be changed into a prime (221570701613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130487464 + ... + 2130487567.

Almost surely, 2^221570701612 is an apocalyptic number.

It is an amenable number.

221570701612 is a deficient number, since it is larger than the sum of its proper divisors (196004851524).

221570701612 is a wasteful number, since it uses less digits than its factorization.

221570701612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260975048 (or 4260975046 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 34.

Adding to 221570701612 its reverse (216107075122), we get a palindrome (437677776734).

The spelling of 221570701612 in words is "two hundred twenty-one billion, five hundred seventy million, seven hundred one thousand, six hundred twelve".