211421333000 has 128 divisors (see below), whose sum is σ = 540726451200. Its totient is φ = 77026176000.

The previous prime is 211421332999. The next prime is 211421333027. The reversal of 211421333000 is 333124112.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 326411 + ... + 727589.

It is an arithmetic number, because the mean of its divisors is an integer number (4224425400).

Almost surely, 2^211421333000 is an apocalyptic number.

211421333000 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 211421333000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270363225600).

211421333000 is an abundant number, since it is smaller than the sum of its proper divisors (329305118200).

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

211421333000 is a wasteful number, since it uses less digits than its factorization.

211421333000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401248 (or 401234 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 211421333000 its reverse (333124112), we get a palindrome (211754457112).

The spelling of 211421333000 in words is "two hundred eleven billion, four hundred twenty-one million, three hundred thirty-three thousand".