211020020000 has 60 divisors (see below), whose sum is σ = 519140951406. Its totient is φ = 84408000000.

The previous prime is 211020019999. The next prime is 211020020021. The reversal of 211020020000 is 20020112.

It can be written as a sum of positive squares in 5 ways, for example, as 48832144 + 210971187856 = 6988^2 + 459316^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 211020020000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5255501 + ... + 5295500.

Almost surely, 2^211020020000 is an apocalyptic number.

211020020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020020000 is an abundant number, since it is smaller than the sum of its proper divisors (308120931406).

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

211020020000 is an equidigital number, since it uses as much as digits as its factorization.

211020020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551031 (or 10551008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 211020020000 its reverse (20020112), we get a palindrome (211040040112).

The spelling of 211020020000 in words is "two hundred eleven billion, twenty million, twenty thousand".