211121340420012 has 48 divisors (see below), whose sum is σ = 537459205809792. Its totient is φ = 63969088740480.

The previous prime is 211121340419939. The next prime is 211121340420013. The reversal of 211121340420012 is 210024043121112.

It is not an unprimeable number, because it can be changed into a prime (211121340420013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87239593 + ... + 89626944.

It is an arithmetic number, because the mean of its divisors is an integer number (11197066787704).

Almost surely, 2^{211121340420012} is an apocalyptic number.

211121340420012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211121340420012 is an abundant number, since it is smaller than the sum of its proper divisors (326337865389780).

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

211121340420012 is a wasteful number, since it uses less digits than its factorization.

211121340420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176875598 (or 176875596 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 211121340420012 its reverse (210024043121112), we get a palindrome (421145383541124).

The spelling of 211121340420012 in words is "two hundred eleven trillion, one hundred twenty-one billion, three hundred forty million, four hundred twenty thousand, twelve".