212000203030123 has 4 divisors (see below), whose sum is σ = 212205828834288. Its totient is φ = 211794577225960.

The previous prime is 212000203030003. The next prime is 212000203030139. The reversal of 212000203030123 is 321030302000212.

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 212000203030123 - 2³³ = 211991613095531 is a prime.

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 212000203030123.

It is not an unprimeable number, because it can be changed into a prime (212000203130123) 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, 102812900536 + ... + 102812902597.

It is an arithmetic number, because the mean of its divisors is an integer number (53051457208572).

Almost surely, 2^{212000203030123} is an apocalyptic number.

212000203030123 is a deficient number, since it is larger than the sum of its proper divisors (205625804165).

212000203030123 is a wasteful number, since it uses less digits than its factorization.

212000203030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205625804164.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 212000203030123 its reverse (321030302000212), we get a palindrome (533030505030335).

The spelling of 212000203030123 in words is "two hundred twelve trillion, two hundred three million, thirty thousand, one hundred twenty-three".