212203022123 has 4 divisors (see below), whose sum is σ = 212327922600. Its totient is φ = 212078121648.

The previous prime is 212203022063. The next prime is 212203022167. The reversal of 212203022123 is 321220302212.

It is a happy number.

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 212203022123 - 2³⁴ = 195023152939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212203022095 and 212203022104.

It is not an unprimeable number, because it can be changed into a prime (212203022173) 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 3 ways as a sum of consecutive naturals, for example, 62447690 + ... + 62451087.

It is an arithmetic number, because the mean of its divisors is an integer number (53081980650).

Almost surely, 2^212203022123 is an apocalyptic number.

212203022123 is a deficient number, since it is larger than the sum of its proper divisors (124900477).

212203022123 is a wasteful number, since it uses less digits than its factorization.

212203022123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124900476.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212203022123 its reverse (321220302212), we get a palindrome (533423324335).

It can be divided in two parts, 21220302212 and 3, that multiplied together give a palindrome (63660906636).

The spelling of 212203022123 in words is "two hundred twelve billion, two hundred three million, twenty-two thousand, one hundred twenty-three".