212002001993 has 4 divisors (see below), whose sum is σ = 212683680768. Its totient is φ = 211320323220.

The previous prime is 212002001987. The next prime is 212002002049. The reversal of 212002001993 is 399100200212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212002001993 - 2²⁴ = 211985224777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212002001903) 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, 340838921 + ... + 340839542.

It is an arithmetic number, because the mean of its divisors is an integer number (53170920192).

Almost surely, 2^212002001993 is an apocalyptic number.

It is an amenable number.

212002001993 is a deficient number, since it is larger than the sum of its proper divisors (681678775).

212002001993 is an equidigital number, since it uses as much as digits as its factorization.

212002001993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681678774.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 212002001993 in words is "two hundred twelve billion, two million, one thousand, nine hundred ninety-three".