211234255155 has 48 divisors (see below), whose sum is σ = 456485462784. Its totient is φ = 87785663040.

The previous prime is 211234255153. The next prime is 211234255171. The reversal of 211234255155 is 551552432112.

211234255155 is a `hidden beast` number, since 2 + 1 + 12 + 3 + 42 + 551 + 55 = 666.

211234255155 is digitally balanced in base 2 and base 11, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211234255155 - 2¹ = 211234255153 is a prime.

211234255155 is strictly pandigital in base 11.

It is not an unprimeable number, because it can be changed into a prime (211234255153) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 30477669 + ... + 30484598.

It is an arithmetic number, because the mean of its divisors is an integer number (9510113808).

Almost surely, 2^211234255155 is an apocalyptic number.

211234255155 is an abundant number, since it is smaller than the sum of its proper divisors (245251207629).

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

211234255155 is a wasteful number, since it uses less digits than its factorization.

211234255155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60962296 (or 60962293 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

Adding to 211234255155 its reverse (551552432112), we get a palindrome (762786687267).

The spelling of 211234255155 in words is "two hundred eleven billion, two hundred thirty-four million, two hundred fifty-five thousand, one hundred fifty-five".