10012212220221 has 128 divisors (see below), whose sum is σ = 16553315520000. Its totient is φ = 5951669391360.

The previous prime is 10012212220217. The next prime is 10012212220303. The reversal of 10012212220221 is 12202221221001.

It is a happy number.

10012212220221 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 221 + 2 + 220 + 221 = 666.

It is not a de Polignac number, because 10012212220221 - 2² = 10012212220217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10012212220194 and 10012212220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012212220211) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 340201135 + ... + 340230563.

It is an arithmetic number, because the mean of its divisors is an integer number (129322777500).

Almost surely, 2^{10012212220221} is an apocalyptic number.

It is an amenable number.

10012212220221 is a deficient number, since it is larger than the sum of its proper divisors (6541103299779).

10012212220221 is a wasteful number, since it uses less digits than its factorization.

10012212220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29964 (or 29958 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10012212220221 its reverse (12202221221001), we get a palindrome (22214433441222).

The spelling of 10012212220221 in words is "ten trillion, twelve billion, two hundred twelve million, two hundred twenty thousand, two hundred twenty-one".