20122121012012 has 24 divisors (see below), whose sum is σ = 35878483457712. Its totient is φ = 9871129569600.

The previous prime is 20122121011991. The next prime is 20122121012069. The reversal of 20122121012012 is 21021012122102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23376587 + ... + 24222077.

It is an arithmetic number, because the mean of its divisors is an integer number (1494936810738).

Almost surely, 2^{20122121012012} is an apocalyptic number.

It is an amenable number.

20122121012012 is a deficient number, since it is larger than the sum of its proper divisors (15756362445700).

20122121012012 is a wasteful number, since it uses less digits than its factorization.

20122121012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957809 (or 957807 counting only the distinct ones).

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

Adding to 20122121012012 its reverse (21021012122102), we get a palindrome (41143133134114).

The spelling of 20122121012012 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-one million, twelve thousand, twelve".