12221211202210 has 32 divisors (see below), whose sum is σ = 22200643563120. Its totient is φ = 4843495222272.

The previous prime is 12221211202201. The next prime is 12221211202223. The reversal of 12221211202210 is 1220211212221.

It can be written as a sum of positive squares in 8 ways, for example, as 6503168117161 + 5718043085049 = 2550131^2 + 2391243^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42472342 + ... + 42759118.

Almost surely, 2^{12221211202210} is an apocalyptic number.

12221211202210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221211202210 is a deficient number, since it is larger than the sum of its proper divisors (9979432360910).

12221211202210 is a wasteful number, since it uses less digits than its factorization.

12221211202210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325990.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221211202210 its reverse (1220211212221), we get a palindrome (13441422414431).

The spelling of 12221211202210 in words is "twelve trillion, two hundred twenty-one billion, two hundred eleven million, two hundred two thousand, two hundred ten".