221001220010212 has 12 divisors (see below), whose sum is σ = 386753364140416. Its totient is φ = 110500258827240.

The previous prime is 221001220010191. The next prime is 221001220010273. The reversal of 221001220010212 is 212010022100122.

It is a happy 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, 86375964 + ... + 88897747.

Almost surely, 2^{221001220010212} is an apocalyptic number.

It is an amenable number.

221001220010212 is a deficient number, since it is larger than the sum of its proper divisors (165752144130204).

221001220010212 is a wasteful number, since it uses less digits than its factorization.

221001220010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175588938 (or 175588936 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221001220010212 its reverse (212010022100122), we get a palindrome (433011242110334).

The spelling of 221001220010212 in words is "two hundred twenty-one trillion, one billion, two hundred twenty million, ten thousand, two hundred twelve".