20121212119976 has 24 divisors (see below), whose sum is σ = 41468820435210. Its totient is φ = 9146005508640.

The previous prime is 20121212119969. The next prime is 20121212119993. The reversal of 20121212119976 is 67991121212102.

It can be written as a sum of positive squares in only one way, i.e., 19434219797476 + 686992322500 = 4408426^2 + 828850^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 10393187111 + ... + 10393189046.

Almost surely, 2^{20121212119976} is an apocalyptic number.

It is an amenable number.

20121212119976 is an abundant number, since it is smaller than the sum of its proper divisors (21347608315234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121212119976 is a wasteful number, since it uses less digits than its factorization.

20121212119976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20786376185 (or 20786376170 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 20121212119976 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred nineteen thousand, nine hundred seventy-six".