1021121001212 has 24 divisors (see below), whose sum is σ = 1929219441072. Its totient is φ = 470111328000.

The previous prime is 1021121001163. The next prime is 1021121001239. The reversal of 1021121001212 is 2121001211201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24464114 + ... + 24505817.

It is an arithmetic number, because the mean of its divisors is an integer number (80384143378).

Almost surely, 2^{1021121001212} is an apocalyptic number.

It is an amenable number.

1021121001212 is a deficient number, since it is larger than the sum of its proper divisors (908098439860).

1021121001212 is a wasteful number, since it uses less digits than its factorization.

1021121001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48970349 (or 48970347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1021121001212 its reverse (2121001211201), we get a palindrome (3142122212413).

The spelling of 1021121001212 in words is "one trillion, twenty-one billion, one hundred twenty-one million, one thousand, two hundred twelve".