210220221101220 has 168 divisors, whose sum is σ = 722062811615040. Its totient is φ = 50962477803840.

The previous prime is 210220221101171. The next prime is 210220221101221. The reversal of 210220221101220 is 22101122022012.

It is a happy number.

210220221101220 is a `hidden beast` number, since 2 + 1 + 0 + 220 + 221 + 1 + 0 + 1 + 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 = 210220221101193 and 210220221101202.

It is not an unprimeable number, because it can be changed into a prime (210220221101221) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 655221280 + ... + 655542039.

It is an arithmetic number, because the mean of its divisors is an integer number (4297992926280).

Almost surely, 2^{210220221101220} is an apocalyptic number.

210220221101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210220221101220 is an abundant number, since it is smaller than the sum of its proper divisors (511842590513820).

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

210220221101220 is a wasteful number, since it uses less digits than its factorization.

210220221101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310763357 (or 1310763340 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210220221101220 its reverse (22101122022012), we get a palindrome (232321343123232).

The spelling of 210220221101220 in words is "two hundred ten trillion, two hundred twenty billion, two hundred twenty-one million, one hundred one thousand, two hundred twenty".