211230122312 has 32 divisors (see below), whose sum is σ = 432746452800. Its totient is φ = 95861505600.

The previous prime is 211230122293. The next prime is 211230122333. The reversal of 211230122312 is 213221032112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1846487 + ... + 1957542.

It is an arithmetic number, because the mean of its divisors is an integer number (13523326650).

Almost surely, 2^211230122312 is an apocalyptic number.

211230122312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211230122312 is an abundant number, since it is smaller than the sum of its proper divisors (221516330488).

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

211230122312 is a wasteful number, since it uses less digits than its factorization.

211230122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804677 (or 3804673 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211230122312 its reverse (213221032112), we get a palindrome (424451154424).

The spelling of 211230122312 in words is "two hundred eleven billion, two hundred thirty million, one hundred twenty-two thousand, three hundred twelve".