221220020010012 has 48 divisors (see below), whose sum is σ = 521863105300992. Its totient is φ = 72930935875840.

The previous prime is 221220020009983. The next prime is 221220020010013. The reversal of 221220020010012 is 210010020022122.

221220020010012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221220020009973 and 221220020010000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220020010013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174036564 + ... + 175303067.

It is an arithmetic number, because the mean of its divisors is an integer number (10872148027104).

Almost surely, 2^{221220020010012} is an apocalyptic number.

It is an amenable number.

221220020010012 is an abundant number, since it is smaller than the sum of its proper divisors (300643085290980).

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

221220020010012 is a wasteful number, since it uses less digits than its factorization.

221220020010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349340218 (or 349340216 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221220020010012 its reverse (210010020022122), we get a palindrome (431230040032134).

The spelling of 221220020010012 in words is "two hundred twenty-one trillion, two hundred twenty billion, twenty million, ten thousand, twelve".