1012121221210 has 16 divisors (see below), whose sum is σ = 1987438034592. Its totient is φ = 368044080400.

The previous prime is 1012121221193. The next prime is 1012121221253. The reversal of 1012121221210 is 121221212101.

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, 4600550896 + ... + 4600551115.

It is an arithmetic number, because the mean of its divisors is an integer number (124214877162).

Almost surely, 2^{1012121221210} is an apocalyptic number.

1012121221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012121221210 is a deficient number, since it is larger than the sum of its proper divisors (975316813382).

1012121221210 is a wasteful number, since it uses less digits than its factorization.

1012121221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9201102029.

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

Adding to 1012121221210 its reverse (121221212101), we get a palindrome (1133342433311).

The spelling of 1012121221210 in words is "one trillion, twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".