121210022021212 has 12 divisors (see below), whose sum is σ = 221340040212816. Its totient is φ = 57970010531840.

The previous prime is 121210022021183. The next prime is 121210022021219. The reversal of 121210022021212 is 212120220012121.

It is a self number, because there is not a number n which added to its sum of digits gives 121210022021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210022021219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658750119589 + ... + 658750119772.

It is an arithmetic number, because the mean of its divisors is an integer number (18445003351068).

Almost surely, 2^{121210022021212} is an apocalyptic number.

It is an amenable number.

121210022021212 is a deficient number, since it is larger than the sum of its proper divisors (100130018191604).

121210022021212 is a wasteful number, since it uses less digits than its factorization.

121210022021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317500239388 (or 1317500239386 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121210022021212 its reverse (212120220012121), we get a palindrome (333330242033333).

The spelling of 121210022021212 in words is "one hundred twenty-one trillion, two hundred ten billion, twenty-two million, twenty-one thousand, two hundred twelve".