210221210120000 has 140 divisors (see below), whose sum is σ = 526441480204596. Its totient is φ = 83255923200000.

The previous prime is 210221210119967. The next prime is 210221210120059. The reversal of 210221210120000 is 21012122012.

It can be written as a sum of positive squares in 10 ways, for example, as 39964851794176 + 170256358325824 = 6321776^2 + 13048232^2 .

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, 21977477 + ... + 30057476.

Almost surely, 2^{210221210120000} is an apocalyptic number.

210221210120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221210120000 is an abundant number, since it is smaller than the sum of its proper divisors (316220270084596).

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

210221210120000 is an equidigital number, since it uses as much as digits as its factorization.

210221210120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52035086 (or 52035061 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210221210120000 its reverse (21012122012), we get a palindrome (210242222242012).

The spelling of 210221210120000 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty thousand".