210001201021220 has 24 divisors (see below), whose sum is σ = 504002882451264. Its totient is φ = 72000411778656.

The previous prime is 210001201021219. The next prime is 210001201021331. The reversal of 210001201021220 is 22120102100012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 210001201021195 and 210001201021204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750004289222 + ... + 750004289501.

It is an arithmetic number, because the mean of its divisors is an integer number (21000120102136).

Almost surely, 2^{210001201021220} is an apocalyptic number.

210001201021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001201021220 is an abundant number, since it is smaller than the sum of its proper divisors (294001681430044).

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

210001201021220 is a wasteful number, since it uses less digits than its factorization.

210001201021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500008578739 (or 1500008578737 counting only the distinct ones).

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

Adding to 210001201021220 its reverse (22120102100012), we get a palindrome (232121303121232).

The spelling of 210001201021220 in words is "two hundred ten trillion, one billion, two hundred one million, twenty-one thousand, two hundred twenty".