212011221109999 has 4 divisors (see below), whose sum is σ = 213016013627320. Its totient is φ = 211006428592680.

The previous prime is 212011221109997. The next prime is 212011221110023. The reversal of 212011221109999 is 999901122110212.

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 212011221109999 - 2¹ = 212011221109997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011221109997) 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, 502396258344 + ... + 502396258765.

It is an arithmetic number, because the mean of its divisors is an integer number (53254003406830).

Almost surely, 2^{212011221109999} is an apocalyptic number.

212011221109999 is a deficient number, since it is larger than the sum of its proper divisors (1004792517321).

212011221109999 is a wasteful number, since it uses less digits than its factorization.

212011221109999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004792517320.

The product of its (nonzero) digits is 104976, while the sum is 49.

The spelling of 212011221109999 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-one million, one hundred nine thousand, nine hundred ninety-nine".