212102122010123 has 4 divisors (see below), whose sum is σ = 212105772016128. Its totient is φ = 212098472004120.

The previous prime is 212102122010071. The next prime is 212102122010131. The reversal of 212102122010123 is 321010221201212.

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 212102122010123 - 2⁸ = 212102122009867 is a prime.

It is a super-2 number, since 2×212102122010123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212102122010095 and 212102122010104.

It is not an unprimeable number, because it can be changed into a prime (212102121010123) 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, 1824915836 + ... + 1825032057.

It is an arithmetic number, because the mean of its divisors is an integer number (53026443004032).

Almost surely, 2^{212102122010123} is an apocalyptic number.

212102122010123 is a deficient number, since it is larger than the sum of its proper divisors (3650006005).

212102122010123 is an equidigital number, since it uses as much as digits as its factorization.

212102122010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650006004.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212102122010123 its reverse (321010221201212), we get a palindrome (533112343211335).

The spelling of 212102122010123 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty-two million, ten thousand, one hundred twenty-three".