221001021102212 has 96 divisors (see below), whose sum is σ = 451354705401600. Its totient is φ = 93747759501312.

The previous prime is 221001021102209. The next prime is 221001021102223. The reversal of 221001021102212 is 212201120100122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177236864 + ... + 178479432.

It is an arithmetic number, because the mean of its divisors is an integer number (4701611514600).

Almost surely, 2^{221001021102212} is an apocalyptic number.

It is an amenable number.

221001021102212 is an abundant number, since it is smaller than the sum of its proper divisors (230353684299388).

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

221001021102212 is a wasteful number, since it uses less digits than its factorization.

221001021102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247325 (or 1247323 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221001021102212 its reverse (212201120100122), we get a palindrome (433202141202334).

The spelling of 221001021102212 in words is "two hundred twenty-one trillion, one billion, twenty-one million, one hundred two thousand, two hundred twelve".