212012120021099 has 4 divisors (see below), whose sum is σ = 214111249922400. Its totient is φ = 209912990119800.

The previous prime is 212012120021089. The next prime is 212012120021113. The reversal of 212012120021099 is 990120021210212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212012120021099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212012120021089) 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, 1049564950499 + ... + 1049564950700.

It is an arithmetic number, because the mean of its divisors is an integer number (53527812480600).

Almost surely, 2^{212012120021099} is an apocalyptic number.

212012120021099 is a deficient number, since it is larger than the sum of its proper divisors (2099129901301).

212012120021099 is a wasteful number, since it uses less digits than its factorization.

212012120021099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099129901300.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 212012120021099 in words is "two hundred twelve trillion, twelve billion, one hundred twenty million, twenty-one thousand, ninety-nine".