211021203221312 has 224 divisors, whose sum is σ = 486304102563840. Its totient is φ = 89948768000000.

The previous prime is 211021203221287. The next prime is 211021203221333. The reversal of 211021203221312 is 213122302120112.

It is a congruent number.

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, 124861937 + ... + 126540687.

Almost surely, 2^{211021203221312} is an apocalyptic number.

211021203221312 is a gapful number since it is divisible by the number (22) 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 211021203221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243152051281920).

211021203221312 is an abundant number, since it is smaller than the sum of its proper divisors (275282899342528).

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

211021203221312 is a wasteful number, since it uses less digits than its factorization.

211021203221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678981 (or 1678971 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211021203221312 its reverse (213122302120112), we get a palindrome (424143505341424).

The spelling of 211021203221312 in words is "two hundred eleven trillion, twenty-one billion, two hundred three million, two hundred twenty-one thousand, three hundred twelve".