10012221001221 has 16 divisors (see below), whose sum is σ = 13529942626560. Its totient is φ = 6584798338560.

The previous prime is 10012221001213. The next prime is 10012221001229. The reversal of 10012221001221 is 12210012221001.

It is an interprime number because it is at equal distance from previous prime (10012221001213) and next prime (10012221001229).

It is not a de Polignac number, because 10012221001221 - 2³ = 10012221001213 is a prime.

It is a super-3 number, since 3×10012221001221³ (a number of 40 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10012221001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012221001229) 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, 17422900 + ... + 17988381.

It is an arithmetic number, because the mean of its divisors is an integer number (845621414160).

Almost surely, 2^{10012221001221} is an apocalyptic number.

It is an amenable number.

10012221001221 is a deficient number, since it is larger than the sum of its proper divisors (3517721625339).

10012221001221 is a wasteful number, since it uses less digits than its factorization.

10012221001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35412556.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10012221001221 its reverse (12210012221001), we get a palindrome (22222233222222).

The spelling of 10012221001221 in words is "ten trillion, twelve billion, two hundred twenty-one million, one thousand, two hundred twenty-one".