221110010212 has 36 divisors (see below), whose sum is σ = 484741181820. Its totient is φ = 87472090944.

The previous prime is 221110010203. The next prime is 221110010249. The reversal of 221110010212 is 212010011122.

221110010212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 70243021156 + 150866989056 = 265034^2 + 388416^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 221110010192 and 221110010201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43386387 + ... + 43391482.

Almost surely, 2^221110010212 is an apocalyptic number.

It is an amenable number.

221110010212 is an abundant number, since it is smaller than the sum of its proper divisors (263631171608).

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

221110010212 is a wasteful number, since it uses less digits than its factorization.

221110010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86777900 (or 86777891 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221110010212 its reverse (212010011122), we get a palindrome (433120021334).

The spelling of 221110010212 in words is "two hundred twenty-one billion, one hundred ten million, ten thousand, two hundred twelve".