210021222220000 has 60 divisors (see below), whose sum is σ = 516683709893736. Its totient is φ = 84008488880000.

The previous prime is 210021222219983. The next prime is 210021222220003. The reversal of 210021222220000 is 22222120012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210021222220003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5250510556 + ... + 5250550555.

Almost surely, 2^{210021222220000} is an apocalyptic number.

210021222220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021222220000 is an abundant number, since it is smaller than the sum of its proper divisors (306662487673736).

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

210021222220000 is an equidigital number, since it uses as much as digits as its factorization.

210021222220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501061141 (or 10501061118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 210021222220000 its reverse (22222120012), we get a palindrome (210043444340012).

The spelling of 210021222220000 in words is "two hundred ten trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty thousand".