221210002212220 has 192 divisors, whose sum is σ = 588493950105600. Its totient is φ = 68097152977920.

The previous prime is 221210002212191. The next prime is 221210002212259. The reversal of 221210002212220 is 22212200012122.

221210002212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9917271 + ... + 23254510.

It is an arithmetic number, because the mean of its divisors is an integer number (3065072656800).

Almost surely, 2^{221210002212220} is an apocalyptic number.

221210002212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221210002212220 is an abundant number, since it is smaller than the sum of its proper divisors (367283947893380).

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

221210002212220 is a wasteful number, since it uses less digits than its factorization.

221210002212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33171948 (or 33171946 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221210002212220 its reverse (22212200012122), we get a palindrome (243422202224342).

The spelling of 221210002212220 in words is "two hundred twenty-one trillion, two hundred ten billion, two million, two hundred twelve thousand, two hundred twenty".