212013020123 has 2 divisors, whose sum is σ = 212013020124. Its totient is φ = 212013020122.

The previous prime is 212013020077. The next prime is 212013020147. The reversal of 212013020123 is 321020310212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212013020123 - 2⁶ = 212013020059 is a prime.

It is not a weakly prime, because it can be changed into another prime (212013026123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006510061 + 106006510062.

It is an arithmetic number, because the mean of its divisors is an integer number (106006510062).

Almost surely, 2^212013020123 is an apocalyptic number.

212013020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013020123 is an equidigital number, since it uses as much as digits as its factorization.

212013020123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212013020123 its reverse (321020310212), we get a palindrome (533033330335).

The spelling of 212013020123 in words is "two hundred twelve billion, thirteen million, twenty thousand, one hundred twenty-three".