211021100202123 has 24 divisors (see below), whose sum is σ = 312698611470960. Its totient is φ = 137055851674560.

The previous prime is 211021100202113. The next prime is 211021100202163. The reversal of 211021100202123 is 321202001120112.

It is not a de Polignac number, because 211021100202123 - 2²⁶ = 211021033093259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211021100202096 and 211021100202105.

It is not an unprimeable number, because it can be changed into a prime (211021100202103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 700715988 + ... + 701017073.

It is an arithmetic number, because the mean of its divisors is an integer number (13029108811290).

Almost surely, 2^{211021100202123} is an apocalyptic number.

211021100202123 is a deficient number, since it is larger than the sum of its proper divisors (101677511268837).

211021100202123 is a wasteful number, since it uses less digits than its factorization.

211021100202123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401733499 (or 1401733496 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211021100202123 its reverse (321202001120112), we get a palindrome (532223101322235).

The spelling of 211021100202123 in words is "two hundred eleven trillion, twenty-one billion, one hundred million, two hundred two thousand, one hundred twenty-three".