122121221021012 has 24 divisors (see below), whose sum is σ = 218221012056936. Its totient is φ = 59784571335168.

The previous prime is 122121221020979. The next prime is 122121221021119. The reversal of 122121221021012 is 210120122121221.

It can be written as a sum of positive squares in 4 ways, for example, as 1114092916036 + 121007128104976 = 1055506^2 + 11000324^2 .

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, 1526322623 + ... + 1526402630.

It is an arithmetic number, because the mean of its divisors is an integer number (9092542169039).

Almost surely, 2^{122121221021012} is an apocalyptic number.

It is an amenable number.

122121221021012 is a deficient number, since it is larger than the sum of its proper divisors (96099791035924).

122121221021012 is a wasteful number, since it uses less digits than its factorization.

122121221021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052725467 (or 3052725465 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 122121221021012 its reverse (210120122121221), we get a palindrome (332241343142233).

The spelling of 122121221021012 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand, twelve".