211315204312500 has 168 divisors, whose sum is σ = 616368211635904. Its totient is φ = 56347056000000.

The previous prime is 211315204312483. The next prime is 211315204312567. The reversal of 211315204312500 is 5213402513112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4114286820 + ... + 4114338180.

Almost surely, 2^{211315204312500} is an apocalyptic number.

211315204312500 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 211315204312500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308184105817952).

211315204312500 is an abundant number, since it is smaller than the sum of its proper divisors (405053007323404).

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

211315204312500 is an equidigital number, since it uses as much as digits as its factorization.

211315204312500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73341 (or 73314 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 211315204312500 its reverse (5213402513112), we get a palindrome (216528606825612).

The spelling of 211315204312500 in words is "two hundred eleven trillion, three hundred fifteen billion, two hundred four million, three hundred twelve thousand, five hundred".