210221112011620 has 48 divisors (see below), whose sum is σ = 441729203328000. Its totient is φ = 84038005941120.

The previous prime is 210221112011539. The next prime is 210221112011621. The reversal of 210221112011620 is 26110211122012.

It is a junction number, because it is equal to n+sod(n) for n = 210221112011591 and 210221112011600.

It is not an unprimeable number, because it can be changed into a prime (210221112011621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278283181 + ... + 279037579.

It is an arithmetic number, because the mean of its divisors is an integer number (9202691736000).

Almost surely, 2^{210221112011620} is an apocalyptic number.

210221112011620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221112011620 is an abundant number, since it is smaller than the sum of its proper divisors (231508091316380).

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

210221112011620 is a wasteful number, since it uses less digits than its factorization.

210221112011620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762748 (or 762746 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 210221112011620 its reverse (26110211122012), we get a palindrome (236331323133632).

The spelling of 210221112011620 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred twelve million, eleven thousand, six hundred twenty".