10002211012221 has 4 divisors (see below), whose sum is σ = 13336281349632. Its totient is φ = 6668140674812.

The previous prime is 10002211012219. The next prime is 10002211012307. The reversal of 10002211012221 is 12221011220001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10002211012221 - 2¹ = 10002211012219 is a prime.

It is a super-2 number, since 2×10002211012221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10002211012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002211012021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667035168701 + ... + 1667035168706.

It is an arithmetic number, because the mean of its divisors is an integer number (3334070337408).

Almost surely, 2^{10002211012221} is an apocalyptic number.

It is an amenable number.

10002211012221 is a deficient number, since it is larger than the sum of its proper divisors (3334070337411).

10002211012221 is an equidigital number, since it uses as much as digits as its factorization.

10002211012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334070337410.

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

Adding to 10002211012221 its reverse (12221011220001), we get a palindrome (22223222232222).

The spelling of 10002211012221 in words is "ten trillion, two billion, two hundred eleven million, twelve thousand, two hundred twenty-one".