212809853144042 has 16 divisors (see below), whose sum is σ = 397982063022912. Its totient is φ = 82912929796320.

The previous prime is 212809853144039. The next prime is 212809853144047. The reversal of 212809853144042 is 240441358908212.

It is not an unprimeable number, because it can be changed into a prime (212809853144047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690941081483 + ... + 690941081790.

It is an arithmetic number, because the mean of its divisors is an integer number (24873878938932).

Almost surely, 2^{212809853144042} is an apocalyptic number.

212809853144042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212809853144042 is a deficient number, since it is larger than the sum of its proper divisors (185172209878870).

212809853144042 is a wasteful number, since it uses less digits than its factorization.

212809853144042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381882163293.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 212809853144042 in words is "two hundred twelve trillion, eight hundred nine billion, eight hundred fifty-three million, one hundred forty-four thousand, forty-two".