12011202221 has 8 divisors (see below), whose sum is σ = 12245438304. Its totient is φ = 11777248080.

The previous prime is 12011202211. The next prime is 12011202227. The reversal of 12011202221 is 12220211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011202221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011202196 and 12011202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011202227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16586 + ... + 155876.

It is an arithmetic number, because the mean of its divisors is an integer number (1530679788).

Almost surely, 2^12011202221 is an apocalyptic number.

It is an amenable number.

12011202221 is a deficient number, since it is larger than the sum of its proper divisors (234236083).

12011202221 is a wasteful number, since it uses less digits than its factorization.

12011202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140971.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12011202221 its reverse (12220211021), we get a palindrome (24231413242).

The spelling of 12011202221 in words is "twelve billion, eleven million, two hundred two thousand, two hundred twenty-one".