210001002120220 has 48 divisors (see below), whose sum is σ = 450915669425088. Its totient is φ = 82128594447360.

The previous prime is 210001002120211. The next prime is 210001002120227. The reversal of 210001002120220 is 22021200100012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 210001002120220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001002120227) 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, 515161437 + ... + 515568916.

It is an arithmetic number, because the mean of its divisors is an integer number (9394076446356).

Almost surely, 2^{210001002120220} is an apocalyptic number.

210001002120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001002120220 is an abundant number, since it is smaller than the sum of its proper divisors (240914667304868).

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

210001002120220 is a wasteful number, since it uses less digits than its factorization.

210001002120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030730590 (or 1030730588 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210001002120220 its reverse (22021200100012), we get a palindrome (232022202220232).

The spelling of 210001002120220 in words is "two hundred ten trillion, one billion, two million, one hundred twenty thousand, two hundred twenty".