12211217307 has 6 divisors (see below), whose sum is σ = 17638425012. Its totient is φ = 8140811532.

The previous prime is 12211217281. The next prime is 12211217323. The reversal of 12211217307 is 70371211221.

It is not a de Polignac number, because 12211217307 - 2⁶ = 12211217243 is a prime.

It is a super-2 number, since 2×12211217307² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12211217507) 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, 678400953 + ... + 678400970.

It is an arithmetic number, because the mean of its divisors is an integer number (2939737502).

Almost surely, 2^12211217307 is an apocalyptic number.

12211217307 is a deficient number, since it is larger than the sum of its proper divisors (5427207705).

12211217307 is a wasteful number, since it uses less digits than its factorization.

12211217307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356801929 (or 1356801926 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

Adding to 12211217307 its reverse (70371211221), we get a palindrome (82582428528).

The spelling of 12211217307 in words is "twelve billion, two hundred eleven million, two hundred seventeen thousand, three hundred seven".