221012022120212 has 24 divisors (see below), whose sum is σ = 389290153248360. Its totient is φ = 109786465152000.

The previous prime is 221012022120181. The next prime is 221012022120223. The reversal of 221012022120212 is 212021220210122.

It can be written as a sum of positive squares in 4 ways, for example, as 67733657162116 + 153278364958096 = 8230046^2 + 12380564^2 .

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, 20737637 + ... + 29530892.

It is an arithmetic number, because the mean of its divisors is an integer number (16220423052015).

Almost surely, 2^{221012022120212} is an apocalyptic number.

It is an amenable number.

221012022120212 is a deficient number, since it is larger than the sum of its proper divisors (168278131128148).

221012022120212 is a wasteful number, since it uses less digits than its factorization.

221012022120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50275691 (or 50275689 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221012022120212 its reverse (212021220210122), we get a palindrome (433033242330334).

The spelling of 221012022120212 in words is "two hundred twenty-one trillion, twelve billion, twenty-two million, one hundred twenty thousand, two hundred twelve".