10002122111221 has 4 divisors (see below), whose sum is σ = 10002141837792. Its totient is φ = 10002102384652.

The previous prime is 10002122111209. The next prime is 10002122111299. The reversal of 10002122111221 is 12211122120001.

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 10002122111221 - 2²³ = 10002113722613 is a prime.

It is a super-2 number, since 2×10002122111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002122111195 and 10002122111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002182111221) 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, 9082105 + ... + 10123678.

It is an arithmetic number, because the mean of its divisors is an integer number (2500535459448).

Almost surely, 2^{10002122111221} is an apocalyptic number.

It is an amenable number.

10002122111221 is a deficient number, since it is larger than the sum of its proper divisors (19726571).

10002122111221 is an equidigital number, since it uses as much as digits as its factorization.

10002122111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19726570.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10002122111221 its reverse (12211122120001), we get a palindrome (22213244231222).

The spelling of 10002122111221 in words is "ten trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".