1210000221212 has 12 divisors (see below), whose sum is σ = 2117970243480. Its totient is φ = 604865865936.

The previous prime is 1210000221193. The next prime is 1210000221223. The reversal of 1210000221212 is 2121220000121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33540887 + ... + 33576942.

It is an arithmetic number, because the mean of its divisors is an integer number (176497520290).

Almost surely, 2^{1210000221212} is an apocalyptic number.

It is an amenable number.

1210000221212 is a deficient number, since it is larger than the sum of its proper divisors (907970022268).

1210000221212 is a wasteful number, since it uses less digits than its factorization.

1210000221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67122340 (or 67122338 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1210000221212 its reverse (2121220000121), we get a palindrome (3331220221333).

The spelling of 1210000221212 in words is "one trillion, two hundred ten billion, two hundred twenty-one thousand, two hundred twelve".