211355551412 has 12 divisors (see below), whose sum is σ = 371788652676. Its totient is φ = 105130222080.

The previous prime is 211355551399. The next prime is 211355551439. The reversal of 211355551412 is 214155553112.

211355551412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 28303351696 + 183052199716 = 168236^2 + 427846^2 .

It is a super-2 number, since 2×211355551412² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136887539 + ... + 136889082.

It is an arithmetic number, because the mean of its divisors is an integer number (30982387723).

Almost surely, 2^211355551412 is an apocalyptic number.

It is an amenable number.

211355551412 is a deficient number, since it is larger than the sum of its proper divisors (160433101264).

211355551412 is a wasteful number, since it uses less digits than its factorization.

211355551412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273776818 (or 273776816 counting only the distinct ones).

The product of its digits is 30000, while the sum is 35.

The spelling of 211355551412 in words is "two hundred eleven billion, three hundred fifty-five million, five hundred fifty-one thousand, four hundred twelve".