221002000212220 has 24 divisors (see below), whose sum is σ = 464134122069408. Its totient is φ = 88395100728000.

The previous prime is 221002000212181. The next prime is 221002000212233. The reversal of 221002000212220 is 22212000200122.

It is a junction number, because it is equal to n+sod(n) for n = 221002000212194 and 221002000212203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355891831 + ... + 356512270.

It is an arithmetic number, because the mean of its divisors is an integer number (19338921752892).

Almost surely, 2^{221002000212220} is an apocalyptic number.

221002000212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002000212220 is an abundant number, since it is smaller than the sum of its proper divisors (243132121857188).

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

221002000212220 is a wasteful number, since it uses less digits than its factorization.

221002000212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712419621 (or 712419619 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221002000212220 its reverse (22212000200122), we get a palindrome (243214000412342).

The spelling of 221002000212220 in words is "two hundred twenty-one trillion, two billion, two hundred twelve thousand, two hundred twenty".