211203001000 has 128 divisors (see below), whose sum is σ = 497603826720. Its totient is φ = 83904000000.

The previous prime is 211203000959. The next prime is 211203001027. The reversal of 211203001000 is 100302112.

It can be written as a sum of positive squares in 16 ways, for example, as 34918901956 + 176284099044 = 186866^2 + 419862^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111100050 + ... + 111101950.

Almost surely, 2^211203001000 is an apocalyptic number.

211203001000 is a gapful number since it is divisible by the number (20) 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 211203001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248801913360).

211203001000 is an abundant number, since it is smaller than the sum of its proper divisors (286400825720).

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

211203001000 is a wasteful number, since it uses less digits than its factorization.

211203001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 211203001000 its reverse (100302112), we get a palindrome (211303303112).

The spelling of 211203001000 in words is "two hundred eleven billion, two hundred three million, one thousand".