212011111200144 has 40 divisors (see below), whose sum is σ = 547696394507680. Its totient is φ = 70670238283008.

The previous prime is 212011111200143. The next prime is 212011111200263. The reversal of 212011111200144 is 441002111110212.

It is a super-2 number, since 2×212011111200144² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212011111200144.

It is not an unprimeable number, because it can be changed into a prime (212011111200143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23755884 + ... + 31438260.

It is an arithmetic number, because the mean of its divisors is an integer number (13692409862692).

Almost surely, 2^{212011111200144} is an apocalyptic number.

212011111200144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212011111200144 is an abundant number, since it is smaller than the sum of its proper divisors (335685283307536).

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

212011111200144 is a wasteful number, since it uses less digits than its factorization.

212011111200144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257327 (or 8257321 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212011111200144 its reverse (441002111110212), we get a palindrome (653013222310356).

The spelling of 212011111200144 in words is "two hundred twelve trillion, eleven billion, one hundred eleven million, two hundred thousand, one hundred forty-four".