211211034123 has 32 divisors (see below), whose sum is σ = 297150092800. Its totient is φ = 133075789056.

The previous prime is 211211034121. The next prime is 211211034157. The reversal of 211211034123 is 321430112112.

It is not a de Polignac number, because 211211034123 - 2¹ = 211211034121 is a prime.

It is a super-2 number, since 2×211211034123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211211034123.

It is not an unprimeable number, because it can be changed into a prime (211211034121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 48810186 + ... + 48814512.

It is an arithmetic number, because the mean of its divisors is an integer number (9285940400).

Almost surely, 2^211211034123 is an apocalyptic number.

211211034123 is a deficient number, since it is larger than the sum of its proper divisors (85939058677).

211211034123 is a wasteful number, since it uses less digits than its factorization.

211211034123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6211.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 211211034123 its reverse (321430112112), we get a palindrome (532641146235).

The spelling of 211211034123 in words is "two hundred eleven billion, two hundred eleven million, thirty-four thousand, one hundred twenty-three".