221002222020212 has 12 divisors (see below), whose sum is σ = 386767801240800. Its totient is φ = 110497135951416.

The previous prime is 221002222020193. The next prime is 221002222020253. The reversal of 221002222020212 is 212020222200122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993639578 + ... + 993861969.

It is an arithmetic number, because the mean of its divisors is an integer number (32230650103400).

Almost surely, 2^{221002222020212} is an apocalyptic number.

It is an amenable number.

221002222020212 is a deficient number, since it is larger than the sum of its proper divisors (165765579220588).

221002222020212 is a wasteful number, since it uses less digits than its factorization.

221002222020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987529350 (or 1987529348 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 221002222020212 its reverse (212020222200122), we get a palindrome (433022444220334).

The spelling of 221002222020212 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, twenty thousand, two hundred twelve".