12221203011 has 4 divisors (see below), whose sum is σ = 16294937352. Its totient is φ = 8147468672.

The previous prime is 12221202991. The next prime is 12221203037. The reversal of 12221203011 is 11030212221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221203011 - 2⁵ = 12221202979 is a prime.

It is a super-2 number, since 2×12221203011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12221203411) 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, 2036867166 + ... + 2036867171.

It is an arithmetic number, because the mean of its divisors is an integer number (4073734338).

Almost surely, 2^12221203011 is an apocalyptic number.

12221203011 is a deficient number, since it is larger than the sum of its proper divisors (4073734341).

12221203011 is an equidigital number, since it uses as much as digits as its factorization.

12221203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073734340.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12221203011 its reverse (11030212221), we get a palindrome (23251415232).

The spelling of 12221203011 in words is "twelve billion, two hundred twenty-one million, two hundred three thousand, eleven".