10001212110221 has 8 divisors (see below), whose sum is σ = 10324035730944. Its totient is φ = 9678401231760.

The previous prime is 10001212110209. The next prime is 10001212110319. The reversal of 10001212110221 is 12201121210001.

10001212110221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10001212110221 - 2⁶ = 10001212110157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001212110196 and 10001212110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001212110521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577570 + ... + 4742483.

It is an arithmetic number, because the mean of its divisors is an integer number (1290504466368).

Almost surely, 2^{10001212110221} is an apocalyptic number.

It is an amenable number.

10001212110221 is a deficient number, since it is larger than the sum of its proper divisors (322823620723).

10001212110221 is an equidigital number, since it uses as much as digits as its factorization.

10001212110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371131.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10001212110221 its reverse (12201121210001), we get a palindrome (22202333320222).

The spelling of 10001212110221 in words is "ten trillion, one billion, two hundred twelve million, one hundred ten thousand, two hundred twenty-one".