210021202022220 has 48 divisors (see below), whose sum is σ = 653399295181920. Its totient is φ = 56005653872448.

The previous prime is 210021202022143. The next prime is 210021202022221. The reversal of 210021202022220 is 22220202120012.

210021202022220 is a `hidden beast` number, since 210 + 0 + 212 + 0 + 2 + 0 + 22 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 210021202022193 and 210021202022202.

It is not an unprimeable number, because it can be changed into a prime (210021202022221) 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, 194464075407 + ... + 194464076486.

It is an arithmetic number, because the mean of its divisors is an integer number (13612485316290).

Almost surely, 2^{210021202022220} is an apocalyptic number.

210021202022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021202022220 is an abundant number, since it is smaller than the sum of its proper divisors (443378093159700).

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

210021202022220 is a wasteful number, since it uses less digits than its factorization.

210021202022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388928151911 (or 388928151903 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 210021202022220 its reverse (22220202120012), we get a palindrome (232241404142232).

The spelling of 210021202022220 in words is "two hundred ten trillion, twenty-one billion, two hundred two million, twenty-two thousand, two hundred twenty".