1021012122212 has 6 divisors (see below), whose sum is σ = 1786771213878. Its totient is φ = 510506061104.

The previous prime is 1021012122187. The next prime is 1021012122239. The reversal of 1021012122212 is 2122212101201.

It can be written as a sum of positive squares in only one way, i.e., 706362926116 + 314649196096 = 840454^2 + 560936^2 .

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 as a sum of consecutive naturals, namely, 127626515273 + ... + 127626515280.

It is an arithmetic number, because the mean of its divisors is an integer number (297795202313).

Almost surely, 2^{1021012122212} is an apocalyptic number.

It is an amenable number.

1021012122212 is a deficient number, since it is larger than the sum of its proper divisors (765759091666).

1021012122212 is a wasteful number, since it uses less digits than its factorization.

1021012122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255253030557 (or 255253030555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1021012122212 its reverse (2122212101201), we get a palindrome (3143224223413).

The spelling of 1021012122212 in words is "one trillion, twenty-one billion, twelve million, one hundred twenty-two thousand, two hundred twelve".