212002001992 has 64 divisors (see below), whose sum is σ = 439179586560. Its totient is φ = 95139316800.

The previous prime is 212002001987. The next prime is 212002002049. The reversal of 212002001992 is 299100200212.

It is a self number, because there is not a number n which added to its sum of digits gives 212002001992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2964853 + ... + 3035515.

It is an arithmetic number, because the mean of its divisors is an integer number (6862181040).

Almost surely, 2^212002001992 is an apocalyptic number.

212002001992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212002001992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219589793280).

212002001992 is an abundant number, since it is smaller than the sum of its proper divisors (227177584568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212002001992 is a wasteful number, since it uses less digits than its factorization.

212002001992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71114 (or 71110 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 212002001992 in words is "two hundred twelve billion, two million, one thousand, nine hundred ninety-two".