211102132123 has 4 divisors (see below), whose sum is σ = 211199821528. Its totient is φ = 211004442720.

The previous prime is 211102132121. The next prime is 211102132193. The reversal of 211102132123 is 321231201112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211102132123 - 2¹ = 211102132121 is a prime.

It is a super-2 number, since 2×211102132123² (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 211102132123.

It is not an unprimeable number, because it can be changed into a prime (211102132121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48841461 + ... + 48845782.

It is an arithmetic number, because the mean of its divisors is an integer number (52799955382).

Almost surely, 2^211102132123 is an apocalyptic number.

211102132123 is a deficient number, since it is larger than the sum of its proper divisors (97689405).

211102132123 is an equidigital number, since it uses as much as digits as its factorization.

211102132123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97689404.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211102132123 its reverse (321231201112), we get a palindrome (532333333235).

The spelling of 211102132123 in words is "two hundred eleven billion, one hundred two million, one hundred thirty-two thousand, one hundred twenty-three".