12201021211210 has 64 divisors (see below), whose sum is σ = 23900340963744. Its totient is φ = 4457594880000.

The previous prime is 12201021211177. The next prime is 12201021211229. The reversal of 12201021211210 is 1211212010221.

It can be written as a sum of positive squares in 16 ways, for example, as 10004486762169 + 2196534449041 = 3162987^2 + 1482071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20730922 + ... + 21311338.

Almost surely, 2^{12201021211210} is an apocalyptic number.

12201021211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12201021211210 is a deficient number, since it is larger than the sum of its proper divisors (11699319752534).

12201021211210 is a wasteful number, since it uses less digits than its factorization.

12201021211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582139.

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

Adding to 12201021211210 its reverse (1211212010221), we get a palindrome (13412233221431).

The spelling of 12201021211210 in words is "twelve trillion, two hundred one billion, twenty-one million, two hundred eleven thousand, two hundred ten".