211421320000 has 140 divisors (see below), whose sum is σ = 571917002976. Its totient is φ = 76880320000.

The previous prime is 211421319983. The next prime is 211421320031. The reversal of 211421320000 is 23124112.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 199749 + ... + 680251.

Almost surely, 2^211421320000 is an apocalyptic number.

211421320000 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 211421320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285958501488).

211421320000 is an abundant number, since it is smaller than the sum of its proper divisors (360495682976).

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

211421320000 is an equidigital number, since it uses as much as digits as its factorization.

211421320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480546 (or 480521 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 211421320000 its reverse (23124112), we get a palindrome (211444444112).

The spelling of 211421320000 in words is "two hundred eleven billion, four hundred twenty-one million, three hundred twenty thousand".