12201212202210 has 80 divisors (see below), whose sum is σ = 33132532895352. Its totient is φ = 3221442144000.

The previous prime is 12201212202181. The next prime is 12201212202217. The reversal of 12201212202210 is 1220221210221.

It is a happy number.

12201212202210 is a `hidden beast` number, since 1 + 2 + 201 + 21 + 220 + 221 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10469100888801 + 1732111313409 = 3235599^2 + 1316097^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12201212202217) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 74488611 + ... + 74652230.

Almost surely, 2^{12201212202210} is an apocalyptic number.

12201212202210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12201212202210 is an abundant number, since it is smaller than the sum of its proper divisors (20931320693142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12201212202210 is a wasteful number, since it uses less digits than its factorization.

12201212202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149140961 (or 149140952 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12201212202210 its reverse (1220221210221), we get a palindrome (13421433412431).

The spelling of 12201212202210 in words is "twelve trillion, two hundred one billion, two hundred twelve million, two hundred two thousand, two hundred ten".