20122012121012 has 6 divisors (see below), whose sum is σ = 35213521211778. Its totient is φ = 10061006060504.

The previous prime is 20122012121011. The next prime is 20122012121017. The reversal of 20122012121012 is 21012121022102.

It can be written as a sum of positive squares in only one way, i.e., 10466350810276 + 9655661310736 = 3235174^2 + 3107356^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122012121011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515251515123 + ... + 2515251515130.

It is an arithmetic number, because the mean of its divisors is an integer number (5868920201963).

Almost surely, 2^{20122012121012} is an apocalyptic number.

It is an amenable number.

20122012121012 is a deficient number, since it is larger than the sum of its proper divisors (15091509090766).

20122012121012 is a wasteful number, since it uses less digits than its factorization.

20122012121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030503030257 (or 5030503030255 counting only the distinct ones).

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

Adding to 20122012121012 its reverse (21012121022102), we get a palindrome (41134133143114).

The spelling of 20122012121012 in words is "twenty trillion, one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, twelve".