1210000222120 has 32 divisors (see below), whose sum is σ = 2722578622920. Its totient is φ = 483986200320.

The previous prime is 1210000222087. The next prime is 1210000222141. The reversal of 1210000222120 is 212220000121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 972349822084 + 237650400036 = 986078^2 + 487494^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1210000222120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039090 + ... + 1870750.

Almost surely, 2^{1210000222120} is an apocalyptic number.

1210000222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210000222120 is an abundant number, since it is smaller than the sum of its proper divisors (1512578400800).

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

1210000222120 is a wasteful number, since it uses less digits than its factorization.

1210000222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868045 (or 868041 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1210000222120 its reverse (212220000121), we get a palindrome (1422220222241).

The spelling of 1210000222120 in words is "one trillion, two hundred ten billion, two hundred twenty-two thousand, one hundred twenty".