20121000211012 has 12 divisors (see below), whose sum is σ = 35219370343276. Its totient is φ = 10058322970080.

The previous prime is 20121000210989. The next prime is 20121000211027. The reversal of 20121000211012 is 21011200012102.

It can be written as a sum of positive squares in 2 ways, for example, as 4019447580736 + 16101552630276 = 2004856^2 + 4012674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20121000210983 and 20121000211001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544263063 + ... + 544300030.

Almost surely, 2^{20121000211012} is an apocalyptic number.

It is an amenable number.

20121000211012 is a deficient number, since it is larger than the sum of its proper divisors (15098370132264).

20121000211012 is a wasteful number, since it uses less digits than its factorization.

20121000211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088567718 (or 1088567716 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121000211012 its reverse (21011200012102), we get a palindrome (41132200223114).

The spelling of 20121000211012 in words is "twenty trillion, one hundred twenty-one billion, two hundred eleven thousand, twelve".