12211121002210 has 32 divisors (see below), whose sum is σ = 23727013661232. Its totient is φ = 4498012028160.

The previous prime is 12211121002207. The next prime is 12211121002219. The reversal of 12211121002210 is 1220012111221.

It can be written as a sum of positive squares in 8 ways, for example, as 492898072489 + 11718222929721 = 702067^2 + 3423189^2 .

It is a super-3 number, since 3×12211121002210³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12211121002219) 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, 111503109 + ... + 111612568.

Almost surely, 2^{12211121002210} is an apocalyptic number.

12211121002210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211121002210 is a deficient number, since it is larger than the sum of its proper divisors (11515892659022).

12211121002210 is a wasteful number, since it uses less digits than its factorization.

12211121002210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223116118.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211121002210 its reverse (1220012111221), we get a palindrome (13431133113431).

The spelling of 12211121002210 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, two thousand, two hundred ten".