12212202021210 has 96 divisors (see below), whose sum is σ = 33135665172480. Its totient is φ = 3114673968384.

The previous prime is 12212202021193. The next prime is 12212202021221. The reversal of 12212202021210 is 1212020221221.

It is a happy number.

12212202021210 is a `hidden beast` number, since 1 + 221 + 220 + 2 + 0 + 212 + 10 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20020711 + ... + 20621669.

It is an arithmetic number, because the mean of its divisors is an integer number (345163178880).

Almost surely, 2^{12212202021210} is an apocalyptic number.

12212202021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212202021210 is an abundant number, since it is smaller than the sum of its proper divisors (20923463151270).

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

12212202021210 is a wasteful number, since it uses less digits than its factorization.

12212202021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610812 (or 610809 counting only the distinct ones).

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

Adding to 12212202021210 its reverse (1212020221221), we get a palindrome (13424222242431).

The spelling of 12212202021210 in words is "twelve trillion, two hundred twelve billion, two hundred two million, twenty-one thousand, two hundred ten".