12221201011 has 16 divisors (see below), whose sum is σ = 12757448704. Its totient is φ = 11698815744.

The previous prime is 12221200997. The next prime is 12221201017. The reversal of 12221201011 is 11010212221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221201011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12221200982 and 12221201000.

It is not an unprimeable number, because it can be changed into a prime (12221201017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415390 + ... + 443836.

It is an arithmetic number, because the mean of its divisors is an integer number (797340544).

Almost surely, 2^12221201011 is an apocalyptic number.

12221201011 is a deficient number, since it is larger than the sum of its proper divisors (536247693).

12221201011 is a wasteful number, since it uses less digits than its factorization.

12221201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28690.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12221201011 its reverse (11010212221), we get a palindrome (23231413232).

The spelling of 12221201011 in words is "twelve billion, two hundred twenty-one million, two hundred one thousand, eleven".