221106061312 has 30 divisors (see below), whose sum is σ = 442198660148. Its totient is φ = 110553022464.

The previous prime is 221106061303. The next prime is 221106061339. The reversal of 221106061312 is 213160601122.

It is a happy number.

It is a super-2 number, since 2×221106061312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6731238 + ... + 6764005.

Almost surely, 2^221106061312 is an apocalyptic number.

It is an amenable number.

221106061312 is a deficient number, since it is larger than the sum of its proper divisors (221092598836).

221106061312 is an frugal number, since it uses more digits than its factorization.

221106061312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495271 (or 13495245 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 221106061312 its reverse (213160601122), we get a palindrome (434266662434).

The spelling of 221106061312 in words is "two hundred twenty-one billion, one hundred six million, sixty-one thousand, three hundred twelve".